the mass of water obtained in a combustion analysis of a 1.000 g sample of an organic compound containing carbon, hydrogen, and oxygen is 0.2980 g. what is the mass percent of hydrogen in the compound?

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Answer 1

The mass percentage of hydrogen in the compound is 3.335% when a 1000g sample of an organic compound containing carbon, hydrogen and oxygen of 0.2980g.

The mass of water obtained in combustion analysis of a 1.000 g sample of an organic compound containing carbon, hydrogen, and oxygen is 0.2980 g

Mass of sample=1.000g 

mass of water= 0.2980 g

Molar mass of water= 18.02 g/mole

No. of moles of H2O = given mass/ molar mass

                                    = 0.2980 / 18.02 gram/ mole

                                    = 0.01653

1 mole of H2O contain 1 mole of H. so, 0.01653 mole of water contains moles of H2O is equals to,

(0.01653 mole H2O) . (2 mole H / 1 mole H2O ) . (1.008gH / 1 mole H)

= 0.033324gH

mass percentage of H in the compound is,

mass% H = (0.033324gH / 1000g) . 100%

                = 3.335%

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Related Questions

why must the alkyl halide product be dried carefully with anhydrous calcium chloride before the distillation?

Answers

the alkyl halide product be dried carefully with anhydrous calcium chloride before the distillation because it is a polar immiscible compound that dissolves large amounts of water without rehydrating the alkyl halide to form an alcohol.

Alkanes with one or more halogen substituents are referred to as haloalkanes or alkyl halide. They are a subset of the broader class of halocarbons, though this distinction is rarely made. Haloalkanes are widely used in industry. Haloalkanes are another name for alkyl halides. Alkyl halides are compounds formed by replacing one or more hydrogen atoms in an alkane with halogen atoms (fluorine, chlorine, bromine or iodine). The new force of attraction between alkyl halides and water molecules is weaker than the forces of attraction between alkyl halides and water molecules. As a result, despite being polar, alkyl halides are immiscible with water.

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Which phrase describes a risk associated with producing energy in a nuclear power plant?
a. depletion of atmospheric hydrogen
b. depletion of atmospheric carbon dioxide
c. production of wastes needing long-term storage
d. production of wastes that cool surrounding water supplies

Answers

Option C - Production of wastes needing long-term storage describes a risk associated with producing energy in a nuclear power plant.

                         

Electricity is produced by nuclear fission reactions in nuclear power plants. A radioactive nucleus with a large atomic mass is blasted during a nuclear fission process. As a result, the nuclear structure breaks down.

Energy is produced as a result of the widespread imperfection between the reactant and the product.

The daughter element produced in this process might also have radioactive properties. These substances have a very long half-life.

Therefore, in order to reduce the risk of radioactive contamination, this waste product needs to be stored safely for a long time.

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imagine a radioactive isotope called z has a half-life of 12 hours. after 2 days, the fraction of the original amount remaining is

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The remaining fraction of the original amount is 0.063 that can be calculated using the half life formula.

The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction:

t1/2 = 0.693/k.

k = 0.693/t1/2

   = 0.693/12

   =0.05775 hour-1

By using the rate constant equation,

[A] = [Ao]*e^(-k*t)

[A] / [Ao]  =  e^(-k*48)

                    = e^ (-0.05775*12)

                     =0.063

Answer: 0.063

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Atmopheric air ha a temperature of 85 f and dew point of 53f what i relative humidity when cooled to 60f ? how many pound of water are removed from 20000 cu ft if cooled to 35F?

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The relative humidity when air is 85F will be 33.38%. The relative humidity when it cooled to 60F is 77.65%.

Why is relative humidity named that?

The quick response is in relation to the maximum volume of water vapour that may be held inside this air at a specific temperature. A value of 50% relative humidity, for instance, indicates that there is only 50% as much water vapor present as there would be if the air is saturated at a certain temperature.

What is the formula for relative humidity?

The formula for relative humidity (%) is relative humidity (actual vapor pressure/saturated vapor pressure) = actual vapor pressure/saturated vapor pressure x 100. Relative humidity is represented by the resultant value.

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Which of the following combination will form an electrovalent bond?
a.p and cl
b.nh3 and bf3
c.h and ca
d.h and s

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The right response is option A. cl and p. P and Cl can form an electrovalent bond just as elements with significant electronegativity differences can.

When electrons are moved from the atoms of one element to the atoms of another, creating positive and negative ions, electrovalent bonds are created. The term "electrovalent bond" or "ionic bond" refers to the bond created when two atoms share electrons.

Ionic bonds, also known as electrovalent bonds, are a type of linkage created in a chemical molecule by the electrostatic attraction of ions with opposing charges.

When one or more electrons from a metal atom are transferred to one or more electrons from a nonmetal atom, electrovalent bonds are created. MgCl2, CaCl2, MgO, Na2S, and numerous more chemicals are other examples.

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When sulfuric acid is combined with sugar, gas is released and a tall black column forms. This is an example of a..?a. physical propertyb. chemical propertyc. physical changed. chemical change

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This is an example of a chemical change.

When sulfuric acid is combined with sugar, a chemical reaction occurs that produces gas and a black column. The gas and black column are new substances that were not present before the reaction took place. This indicates that a chemical change has occurred, as the substances have been transformed into something new with different properties.

Physical changes, on the other hand, involve a change in the form or appearance of a substance, but the substance itself remains unchanged. For example, crushing a rock into smaller pieces is a physical change, because the rock is still made up of the same substance, just in a different form.

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the reaction of ch3ch2mgbr with ch3coch2ch3 gives: group of answer choices the racemate of a chiral product. none of the above a single enantiomer. a mixture of diastereomers. an achiral product.

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The reaction of CH₃CH₂MgBr with CH₃COCH₂CH₃ gives the product , the right answer of choice is : an achiral product.

An achiral product is the identical with  its mirror image. the achiral compound is superimposable on its mirror image. an achiral product is the product which is as same as its mirror image . the achiral compound is superimposable. while the chiral object is not identical with its mirror image. the chiral compound is not superimposable it its mirror image.

Thus, an achiral product is formed by the reaction of the CH₃CH₂MgBr with CH₃COCH₂CH₃ which is superimposable to its mirror image.

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what is the maximum mass of ammonia that can be produced by the reaction of 1,000g of nitrogen with 500g of hydrogen?

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2815.9 g  is the maximum mass of ammonia that can be produced by the reaction of 1,000g of nitrogen with 500g of hydrogen

Write the balanced equation.

3H₂ + N₂ → 2NH₃

Calculate the moles of hydrogen in 500g.

n = m/M; where n = moles, m = mass, and M = molar mass.

M(H₂) = 2 × 1.008 g/mol H = 2.016 g/mol H₂

n(H₂) = (500)/(2.016 g/mol) = 248.015 mol H₂

Calculate the moles of nitrogen in 1,000g

M(N₂) = 2 × 14.007 g/mol N = 28.014 g/mol N₂

n(N₂) = (1,000g )/(28.014 g/mol) = 35.696 mol N₂

Calculate the moles of ammonia that can be produced by 248.015 mol H₂ and 35.696 mol N₂, using the mole ratio between each reactant and ammonia in the balanced equation.

248.015 mol H₂ × 2 mol NH₃/3 mol H₂ = 165.34 mol NH₃

35.696 mol N₂ × 2 mol NH₃/1 mol N₂ = 71.392mol NH₃

Because H₂ produces the least number of moles of NH₃, it determines the maximum mass of NH₃.

Calculate the mass of NH₃ in 3.3069 mol.

m = n × M

M(NH₃) = 14.007 g/mol N + (3 × 1.008 g/mol H) = 17.031 g/mol NH₃

m(NH₃) = 165.34 mol × 17.031 g/mol = 2815.9 g NH₃

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A solution cotains 50 g of NaCl per 100.0 g of water at 25 C. is the solution unsaturated, saturated, or supersaturated? (use the figure 12.11 in the textbook.)

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The solution is Supersaturated.

Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.

Solubility of NaCl at 25°C = 35.9 g/100 ml

So, a saturated solution has 35.9 g NaCl in 100 ml solution.

Given solution has 50 g of NaCl in 100 g of water. (At Standard Temperature and Pressure, 100 ml water is equivalent of 100g.)

Therefore, in give case the concentration of NaCl- Water solution is 50 g/100 ml.

It is more than concentration of saturated solution. Hence, the given solution is Supersaturated.

A supersaturated solution is a solution which contains more than the average solvent that can be dissolved at a given temperature.

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(05.04 hc) the temperature of a chemical reaction ranges between 40 degrees celsius and 180 degrees celsius. the temperature is at its lowest point when t = 0, and the reaction completes 1 cycle during a 12-hour period. what is a cosine function that models this reaction? (6 points) a f(t) = 70 cos 12t 110 b f(t) = 110 cos 12t 70 c f(t) = −70 cos pi over 6 t 110 d f(t) = −110 cos pi over 6 t 70

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The cosine function of a chemical reaction that occurs at temperatures between 40 and 180 degrees Celsius is [tex]f (t) = -70\cos \left(\frac{\pi}{6}\right)t+110[/tex].  Option c is the correct expression.

A cosine function's amplitude is equal to half the vertical distance between its highest and lowest points. The distance between the tallest point and the center line is equal to this.  This is of the form f (t) = A cos (bt)+k where A is the wave amplitude, t is the time period, and k is the vertical displacement.

In this problem, the temperature is measured by f(t), which ranges from 40 to 180 degrees Celsius. Then the temperature is not negative. The amplitude will be,

[tex]A=\frac{|180-40|}{2}=70[/tex]

Given the time period is 12 hours.

[tex]\begin{aligned}\text{Period}&= \frac{2\pi}{b}\\12&= \frac{2\pi}{b}\\b&= \frac{2\pi}{12}\\b&=\frac{\pi}{6}\end{aligned}[/tex]

When, t = 0, the wave must be at its lowest point. Then, f(t)=40. Find k using this.

[tex]\begin{aligned}f(t=0)&=40\\40&=-70\cos\left(\frac{\pi}{6}\times 0\right)+k\\40&=-70+k\\k&=110\end{aligned}[/tex]

The required cosine function will be of the form, [tex]f (t) = -70\cos \left(\frac{\pi}{6}\right)t+110[/tex]

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what is the trend in the size of the band gap as you move down the column of the group 4a elements?

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The trend in the size of the band gap as you move down the column of the group 4a elements is the band gap decreases

Column elements of group 4A are the 14th group chemical elements in the periodic table. Members of group IVA are carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). Group 4A contains elements of all three types: nonmetals, metalloids/semimetals, and metals.

The energy gap or band gap is the difference between the upper end of the valence band (Ev) and the lower end of the conduction band (Ec) or the minimum energy required to excite electrons from the valence band to the conduction band. The band gap size trend will decrease as the group 4A column elements move down. This is because the band gap energy decreases as it approaches the nano gap, so that the energy level decreases and the band thickness becomes thinner.

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silver oxalate, ag2c2o4), is dissolved in pure water. the concentration of ag ions is a saturated solution is 2.2 x 10-4 m. what is the ksp of ag2c2o4)?

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Ag ions have a 2.2 x 10-4 m concentration in a saturated solution, while the ksp of ag2c2o4 is 5.3 x 10-12.

[Ag^+] = 2.2 × 10^-4 mol L^-1 [C2O4^2 - ] = 0.5 [Ag^+]

What in chemistry is concentration?

The amount of solute in a certain amount of solution is how concentrated a material is. Molarity, or the number of moles of solute in one liter of solution, is the standard unit of concentration expression.

Give me an example of focus.

How much of the solute has been dissolved in the solvent is indicated by the concentration of the solution. A concentration of one teaspoon of salt per two cups of water, for instance, might be indicated as 1 t salt per 2 c water.

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How many atoms of silicon would there be in a sample that contained 4.66 x 1030 grams?

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The number of atoms of silicon present in a sample that contained 4.66 × 10³⁰ grams is 9.99 × 10⁵² atoms.

How to calculate number of atoms?

The number of atoms of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number as follows:

no of atoms = no of moles × 6.02 × 10²³

However, the number of moles in 4.66 × 10³⁰ grams must be calculated as follows:

moles = 4.66 × 10³⁰ grams ÷ 28.0855g/mol

moles = 1.659 × 10²⁹ moles

Number of atoms = 1.659 × 10²⁹ moles × 6.02 × 10²³

no of atoms = 9.99 × 10⁵² atoms

Therefore, 9.99 × 10⁵² atoms is the number of atoms of silicon in the sample.

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The number of miles mario can drive varies directly with the amount of gas that he has. he can drive 18 miles on ½ a gallon of gas. how many miles can mario drive with 9 gallons of gas?

Answers

Mario can drive 324 miles with 9 gallons of gas.

To find the number of miles Mario can drive with 9 gallons of gas, you can use the formula for direct variation: y = kx, where y is the number of miles Mario can drive, x is the number of gallons of gas, and k is the constant of variation.

A sort of proportionality known as "direct variation" occurs when one quantity directly changes in response to a change in another quantity. This suggests that if one quantity increases, the other quantity will also increase proportionately. Similar to the last example, if one quantity declines, the other amount also declines.

Since we know that Mario can drive 18 miles on ½ a gallon of gas, we can set up the equation like this: 18 = k * 0.5. Solving for k, we find that k = 36.

Then we can substitute 9 for x in the equation to find the number of miles Mario can drive with 9 gallons of gas: y = 36 * 9 = 324 miles.

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Mario can drive 324 miles with 9 gallons of gas.

To find the number of miles Mario can drive with 9 gallons of gas, you can use the formula for direct variation: y = kx, where y is the number of miles Mario can drive, x is the number of gallons of gas, and k is the constant of variation.

A sort of proportionality known as "direct variation" occurs when one quantity directly changes in response to a change in another quantity. This suggests that if one quantity increases, the other quantity will also increase proportionately. Similar to the last example, if one quantity declines, the other amount also declines.

Since we know that Mario can drive 18 miles on ½ a gallon of gas, we can set up the equation like this: 18 = k * 0.5. Solving for k, we find that k = 36.

Then we can substitute 9 for x in the equation to find the number of miles Mario can drive with 9 gallons of gas: y = 36 * 9 = 324 miles.

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how dose physical work

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Physical changes only change the state of substance not it's chemical composition.

What are physical changes?

Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.

Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.

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Your question is incomplete , but most probably your full question was,how does physical changes work?

g 1 mole of a monoatomic gas increases its volume from 1 to 3 while the pressure also increases from 250 to 1000. this p-v process is linear. find the involved work of this process

Answers

The involved work done when gas  increases its volume from 1 to 3 while the pressure also increases from 250 to 1000 is 2250 joule

Work done= ΔpΔv

Work done=3×750

Work done=2250 joule

First Law of Thermodynamics: The change in total internal energy of a particular system between two states is described by the first law of thermodynamics. The first law of thermodynamics states that when heat is added to a system or when work is done, the total internal energy of the system will change. A positive result when calculating work done indicates that energy is discharged into the environment while the system is operating. If the value is negative, the environment's influence has caused the system to gain energy.

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consider the following two alcohols: c3h7oh (1-propanol) c5h11oh (1-pentanol) (a) which would have the higher boiling point? (b) which would have the larger enthalpy of vaporization?

Answers

C₅H₁₁OH (1-pentanol) would have the higher boiling point, and C₅H₁₁OH (1-pentanol) would have the larger enthalpy of vaporization.

Alcohols are polar molecules because of differences in the electronegativities of carbon and oxygen. As a result, alcohols and other polar compounds interact through hydrogen bonding and dipole-dipole interactions.

This is because dispersion force. As the size and mass of molecules increase, the Vander Waals dispersion forces increase. Hence, boiling point and enthalpy of vaporization increase.

As the size and mass of molecules decrease, the Vander waals dispersion forces decrease. Hence, boiling point and enthalpy of vaporization decrease.

Hence, a) C₅H₁₁OH will have the higher boiling point. b) C₅H₁₁OH will have the larger enthalpy of vaporization.

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how many moles of asa are present in a 5 ml aliquot (measured sample) of this solution?

Answers

The United States Pharmacopeia (USP) establishes standards for pharmaceuticals moles (6). The quantity of CgH8O4 in aspirin tabs must be between 95 and 105 percent of what is stated on the label (acetylsalicylic acid).

For CgH9NO2, the same percentage is true (acetaminophen). Use the calculation below to determine how much aspirin is in each pill. (MW = 180 g/mole for aspirin) Mass of aspirin Equals moles of aspirin times its molecular weight (in g/mole) (in grams) 7. Titration with a powerful base can be used to determine the concentration of an acid solution. To start, figure out how many moles of strong base are needed to achieve the titration's equivalence point.

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a stock solution of nh4i is available to prepare solutions that are more dilute. calculate the volume, in ml, of a 2.0-m solution of nh4i required to prepare exactly 250 ml of a 0.180-m solution of nh4i.

Answers

A 2.0-m solution of nh4i required to prepare exactly 250 ml of a 0.180-m solution of nh4i, the needed volume is 22.5 ml

M1V1=M2V2

V1=M2V2/M1

V1= 0.180×250 ÷2.0

V1=22.5 ml

The area occupied within an object's boundaries determines its volume in three dimensions. On occasion, it is referred to as the object's capacity. The volume of an object can be used to calculate how much is needed to fill it; for instance, how much water is needed to fill a bottle, aquarium, or water tank. A sphere is the most basic and prevalent type of three-dimensional shape. We come across spheres all the time in the form of balls, globes, ornamental lights, oranges, etc.

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calculate the energy released in units of megaelectron volts when a uranium-238 nucleus undergoes alpha decay.

Answers

The energy generated by the alpha decay of a uranium-238 nucleus is 4.25 megaelectron volts (MeV).

A nuclear process known as "alpha decay" releases a particle made up of two protons and two neutrons when an unstable nucleus transforms into another element. An alpha particle, which is just a helium nucleus, is an expelled particle that has this name. A positive charge and a sizable mass characterize alpha particles.

We have, when [tex]U^{238}[/tex] emits an alpha particle,

[tex]U^{238}= Th^{234}+He^{4}[/tex]

Therefore, mass defect, Δm = [tex]m*U^{238} - (m*Th^{234} +m He^4)[/tex]

⇒Δm=[tex][238.0508-(234.0436+4.0026)][/tex]

⇒Δm= [tex]0.00457u[/tex]

So energy released, [tex]E=[/tex]Δ[tex]mc^2[/tex]

⇒[tex]E= 0.00457u*931.5MeV\\[/tex]

⇒[tex]E= 4.25 MeV[/tex]

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Why might Pacific Ocean be more conducive to volcanic activity?

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Answer:

One reason is that the Pacific Ocean is home to the "Ring of Fire," a region that is prone to earthquakes and volcanic eruptions. The Ring of Fire is a horseshoe-shaped area around the Pacific Ocean that is characterized by a high number of earthquakes and volcanic eruptions. It is caused by the movement of tectonic plates, which are large pieces of the Earth's crust that move slowly over time.

An atom's electron configuration ends with 3p2. If another atom has eight more electrons, what would be the continuation of the electron configuration? 3p24s23d6 3p64s23d2 3p63d24s2 3p23d64s2.

Answers

Considering the electronic configuration, the electronic configuration of the element with 8 more electrons is 3p⁶ 4s² 3d².

The placement of each element's electrons in its energy levels and sub-levels is known as its "electron configuration" (orbitals).

Cations and anions' electronic configurations

In other words, we adhere to the Aufbau Principle, Pauli-exclusion Principle, and Hund's Rule, which are the three key rules.

Electrons are allocated rationally per their energy level within the seven energy levels.

Sub-levels are separated into each level. There can be up to 4 sub-levels that each level is divided into. The names of these 4 sub-levels are s, p, d, and f.

There can only be a maximum of 2 electrons in sub-level s, 6 electrons in sub-level p, 10 electrons in sub-level d, and there can be a maximum of 2 electrons in sub-level f.

In this instance, the element's electrical arrangement ends with 3p². another element with eight more electrons.

First, you must add 4 electrons to the 3p orbital to complete it:

3p² plus 4 electrons equals 3p⁶

Two equal electrons must be added to the 4s orbital. This is true since 4s is less energetic than 3d.

4s²

Finally, you add the final 2 electrons to occupy the third orbital.3d²

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What phyical and chemical propertie would be important in the tin that plate the outide of the can

Answers

Tin is not easily oxidized and resists corrosion because it is protected by an oxide film. Tin resists corrosion from distilled sea and soft tap water, and can be attacked by strong acids, alkalis and acid salts. Tin is used in for can coating: tin-plated steel containers are widely used for food preservation.

What happens when tin reacts with acid?

Characteristics: Metallic tin is soft and malleable. It slowly dissolves in dilute nonoxidizing acids or more readily in hot concentrated HCl. It reacts with HNO3 to form metastannic acid, H2SnO3, a white substance insoluble in alkalies or acids.

Tin can it oxidize things?

A reducing agent is TIN(II) OXIDE. due to slow oxidation to tin(IV) oxide, unstable in air. This oxidation starts to burn incandescently at 300 °C. powerful oxidizing agents incompatible.

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hydrochloric acid, hcl, reacts with barium hdroxide to produce barium chloride and water. how many ml of a 3.00 m hydrochloric

Answers

Hydrochloric acid, HCl, reacts with barium hydroxide to produce barium chloride and water. 0.197 mol of a 3.00 m hydrochloric acid is produced.

Hydrochloric acid (HCl) reacts with barium hydroxide (Ba(OH)2) to produce barium chloride (BaCl2) and water according to the following balanced chemical equation:

2 HCl + Ba(OH)2 --> BaCl2 + 2 H2O

To find the volume of a 3.00 M hydrochloric acid solution needed to react with a given amount of barium hydroxide, we need to know the mass or volume of the barium hydroxide and the ratio of the reactants in the balanced chemical equation.

For example, suppose we want to find the volume of 3.00 M HCl needed to react with 50.0 g of Ba(OH)2. We can use the balanced chemical equation and the molar masses of the reactants and products to calculate the volume of HCl needed as follows:

First, we need to convert the mass of Ba(OH)2 to moles. To do this, we can use the formula:

n = m / M

where n is the number of moles, m is the mass of the substance, and M is the molar mass of the substance.

Putting values, we get:

n = 50.0 g / 253.3 g/mol

= 0.197 mol

Next, we need to use the coefficients in the balanced chemical equation to determine the ratio of HCl to Ba(OH)2. From the equation, we see that for every 2 mol of HCl, there is 1 mol of Ba(OH)2. Therefore, the ratio of HCl to Ba(OH)2 is 2:1.

We can now use the ratio of HCl to Ba(OH)2 and the number of moles of Ba(OH)2 to calculate the number of moles of HCl needed. Since the ratio of HCl to Ba(OH)2 is 2:1, we need twice as many moles of HCl

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solid iron(ii) oxide reacts with carbon monoxide gas to form solid iron and carbon dioxide gas.

Answers

The balanced chemical equation will be [tex]$$\mathrm{Fe}_2 \mathrm{O}_3(\mathrm{~s})+3 \mathrm{CO}_{(\mathrm{g})} \rightarrow 2 \mathrm{Fe}_{(\mathrm{s})}+3 \mathrm{CO}_2(\mathrm{~g})$$[/tex]

Chemical equations are symbols and chemical formulae that depict a chemical reaction symbolically.

Reactants, products, and an arrow indicating the reaction's direction make up a chemical equation. A balanced chemical equation is one in which the number of atoms in each of the molecules is the same on both sides of the equation.

Solid iron (iii) Oxide reacts with carbon monoxide gas to form solid iron and carbon dioxide gas.

Iron (iii) oxide --> [tex]Fe_2O_3[/tex]

Carbon monoxide --> CO

Iron --> Fe

Carbon dioxide --> [tex]CO_2[/tex]

The given statement is

[tex]$$\mathrm{Fe}_2 \mathrm{O}_3(\mathrm{~s})+\mathrm{CO}_{(\mathrm{g})} \longrightarrow \mathrm{CO}_2+\mathrm{Fe}_{(\mathrm{g})}$$[/tex]

Here, on LHS  & on RHS we have the following:

Fe -->  2 -->  1

C  -->  1 --> 1

0 -->  4 --> 2

The reaction is unbalanced; so, we will balance the chemical equation

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The complete question should be:

Solid iron(III) oxide reacts with carbon monoxide gas to form solid iron and carbon dioxide gas. Express your answer as a chemical equation.

how many grams of carbon atoms are present in a sample of c5h7 if there are 4.10 moles of hydrogen atoms in the sample

Answers

29.52 grams of carbon atoms are present in a sample of c5h7 if there are 4.10 moles of hydrogen atoms in the sample

the ratio of C: H C5H7 in is 0.60:1

If 4.10 moles H is present in C5H7

Therefore amount of C present is 2.46 mol

Amount of Carbon present =2.46*12.

                                  =29.52g

Carbon (from Latin carbo 'coal') is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—its atom making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust.

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how many atoms of carbon are present in 25.0g of glucose, c6h12o6? (molar mass of glucose is 180.2 g/mol)

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The chemical formula of Glucose is C6H12O6. Glucose is a monosaccharide containing an aldehyde group (-CHO) the no. of carbon atoms =3.6132 × 10^21 .

It is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms. Glucose is an aldohexosecarbohydrates can be classified into three types: monosaccharides, oligosaccharides, and polysaccharides.

The sugar chemical formula is C12 H22 O11 , the fructose formula is C6H12O6 and the chemical formula of glucose is C6H12O6.

Glucose if C6H12O6 molecular weight is (×6)+ 46+ 96 = M4 44 4 4 4 g =180 = moles of molecule 4,

now #1 in 4 molecules 444 = 6.022 × 10^23 or no.

Molecules in 0.01 mole of glucose = 6.022 × 10^21

Now, one molecule of glucose has 6 carbons. So carbons 6.022 × 10^21 = 4 molecules × 42 glucose × 10^21 × 6 = 3.6132 × 10^21 carbon atoms.

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WILL GIVE BRAINLIEST!! pls help
(04.05 MC)


Read the chemical equation shown.


3SO2 + 2HNO3 + 2H2O → 3H2SO4 + 2NO


Which statement is true about this chemical equation?


A) H (hydrogen) was oxidized and S (sulfur) was reduced.

B) H (hydrogen) was reduced and N (nitrogen) was oxidized.

C) S (sulfur) was oxidized and N (nitrogen) was reduced.

D) S (sulfur) was reduced and N (nitrogen) was oxidized.

Answers

Based on the chemical equation of the reaction, S (sulfur) was oxidized and N (nitrogen) was reduced.

The correct option is C.

What is a redox reaction?

A redox reaction is a name for a reduction-oxidation reaction.

In a redox reaction, oxidation and reduction occur during the reaction.

Oxidation involves a loss of electrons and results in an increase in the oxidation number of the oxidized species.

Reduction involves a gain of electrons and results in a decrease in the oxidation number of the reduced species.

Considering the given equation of reaction:

3 SO₂ + 2 HNO₃ + 2 H₂O → 3 H₂SO₄ + 2 NO

The oxidation number of nitrogen changes from +5 in HNO₃to +2 in NO. Hence, it is reduced.

The oxidation number of sulfur changes from +4 tin SO₂ to +6 in H₂SO₄. Hence it is oxidized.

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a hazardous waste incinerator is being fed methylene chloride at a concentration of 5,858 mg/l in an aqueous stream at a rate of 40.5 l/min. calculate the mass flow rate of the feed in units of g/min.

Answers

Methylene chloride is being fed into a hazardous waste incinerator at a rate of 40.5 l/min in an aqueous stream with a concentration of 5,858 mg/l. The feed's mass flow rate is 237.25g/min

The mass of a liquid traveling through a pipe in a given amount of time is its mass flow rate. In other words, the rate at which fluid passes through a unit area is termed as the rate of mass flow. The density, liquid velocity, and cross-sectional area all have an impact on the mass flow.

Given that methylene chloride has a concentration of 5,858 mg/l

Methylene chloride rate = 40.5 L/min

The mass flow rate is equal to 40.5 x 5858 x 10-3.

g/min rate = 237.25

Consequently, the mass flow rate found is = 237.25g/min

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The following are characteristics of ideal chemical sanitizer except:
A. Approved for food contact surface application C. High in toxicity and corrosivity
B. Destroys microorganisms rapidly
D. Leaves no residues

Answers

The following are characteristics of ideal chemical sanitizer except: Option A. Approved for food contact surface application and option C. High in toxicity and corrosivity

Chemical substances that are capable of eradicating disease-causing microorganisms are also used to sanitize. Chlorine (bleach), iodine, and quaternary ammonium are common sanitizers. Chemical disinfectants are widely used in the food service sector.

The most often used sanitizers are those that contain chlorine. They work well against all bacteria and are reasonably priced. The ideal temperature range for bleach is between 55°F and 75°F. Hot water reduces the effectiveness of bleach. In diluted form, quaternary ammonium compounds are tasteless, colorless, and harmless.

Hospitals mostly employ the following five EPA-registered substances as disinfectants at the moment: quaternary ammonium, hypochlorite, accelerated hydrogen peroxide, phenolics, and peracetic acid.

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