The table given below shows number of grams of five different solids dissolving in 100 g of the solvents : water, alcohol and chloroform (all at 20âC).
SolventWaterAlcoholChloroformSalt36.00.00.0Sugar204.00.00.0Iodine0.620.03.0Chalk0.00.00.0Urea100.016.00.0
(a) Which solid dissolves best in water at 20âC ? (b) Which solid is maximum soluble in alcohol ?
(c ) Which solid is insoluble in all the three solvents ?

Chemical such as Ozone or sulfate/nitrate which are transformed in the presence of Sunlight water oxygen or other compound are known as secondary pollutants.

Pollutants are the particle that contaminates the environment in a negative manner.

The chemicals which are not produce directly as a pollutant but are transformed in the presence of Sunlight water oxygen and other compound are known as secondary pollutants.

chemicals like Ozone, sulfate/nitrate are called secondary because they are not present directly as a pollutant but there converted into pollutant because of the certain conditions.

To know more about secondary pollutants, visit,

https://brainly.com/question/12806508

#SPJ4

The bond in HBr is likely to be a non-polar covalent bond.

The inorganic substance with the formula HBr is hydrogen bromide. It is a hydrogen halide made up of both bromine and hydrogen. It is a colorless gas that, when dissolved in water, produces hydrobromic acid, which, at room temperature, is saturated with 68.85% HBr by weight.

Hydrogen bromide (HBr) is a covalent compound, which means it is formed by the sharing of electrons between the hydrogen and bromine atoms. In a covalent bond, the electrons are shared equally between the atoms, and the bond is typically non-polar. The difference in electronegativity between hydrogen and bromine is 0.76, which is less than the typical threshold of 1.7 for a polar covalent bond. Therefore, the bond in HBr is likely to be a non-polar covalent bond.

To know more about electronegativity visit :

https://brainly.com/question/2060520?referrer=searchResults

#SPJ4

The bond in HBr is likely to be a non-polar covalent bond.

The inorganic substance with the formula HBr is hydrogen bromide. It is a hydrogen halide made up of both bromine and hydrogen. It is a colorless gas that, when dissolved in water, produces hydrobromic acid, which, at room temperature, is saturated with 68.85% HBr by weight.

Hydrogen bromide (HBr) is a covalent compound, which means it is formed by the sharing of electrons between the hydrogen and bromine atoms. In a covalent bond, the electrons are shared equally between the atoms, and the bond is typically non-polar. The difference in electronegativity between hydrogen and bromine is 0.76, which is less than the typical threshold of 1.7 for a polar covalent bond. Therefore, the bond in HBr is likely to be a non-polar covalent bond.

To know more about electronegativity visit :

brainly.com/question/2060520?referrer=searchResults

#SPJ4

0.2 moles is the molar concentration of the HCL in the mixture. you combine 5.00 ml 0.206 m ca(no3)2 and 2.00 ml 0.811 m hcl.

Molarity of Ca(No3)2  = 0.26M

volume of the Ca(N03)2 = 5 ml

molarity of HCL = 0.811M

Volume of HCL = 2 ml

after mixing ,

the molar concentration of HCL =Mhcl×Vhcl÷Vhcl×Vca(No3)2

                                                   = 0.8× 2/2+5

                                                  = 0.2 moles

the molar concentration of the HCL in the mixture is 0.2 moles.In terms of the amount of material per unit volume of solution, molar concentration is a measurement of the concentration of a chemical species, specifically a solute in a solution. The most frequent measure of molarity in chemistry is the number of moles per litre, denoted by the unit symbol mol/L or mol/dm3 in SI units.

Learn more about  molar concentration here:

https://brainly.com/question/21841645

#SPJ4

The major organic product formed by the free-radical bromination of methylcyclopentane is 1- Bromo, 1- methyl Cyclopentane .

What is free radicals ?

A specific class of unstable molecule produced throughout typical cell metabolism (chemical changes that take place in a cell). In cells, free radicals can accumulate and harm other molecules like proteins, lipids, and even DNA.

In the presence of sunlight, bromine produces a free radical, which it then absorbs to create the majority of the stable radical. Only the alkane's highest substituted carbon experiences bromination. A tertiary carbon makes an intermediate free radical the most stable. It will therefore be the main product.

To learn more about free radicals click here :

https://brainly.com/question/12972101

#SPJ4

we should take out from point

Answer: There is a 1:1 mole ratio between these two compounds.

Explanation:To determine the mole ratio between lead(II) oxide (PbO) and lead(II) nitrate (Pb(NO3)2) in the given chemical equation, you will need to balance the equation first. The balanced chemical equation is:

2NaNO3 + PbO → Pb(NO3)2 + Na2O

Once the equation is balanced, you can use the coefficients in front of each compound to determine the mole ratio. In this case, the coefficient for PbO is 1, and the coefficient for Pb(NO3)2 is 1, which means that there is a 1:1 mole ratio between these two compounds. This means that for every 1 mole of PbO, there is 1 mole of Pb(NO3)2 produced in the reaction.

It is important to note that the mole ratio is only a way to express the relative amounts of reactants and products in a chemical reaction, and does not necessarily reflect the actual amounts of the compounds involved. To determine the actual amounts of each compound, you will need to know the mass or volume of the compounds, as well as their respective densities or molar masses.

the periodic table is a tabular arrangement of chemical elements that is arranged by increasing atomic number and groups elements according to recurring properties. The seven rows of the periodic table are called " periods" and vertical columns called " groups"

CO2 produced by humans About 1/3 of carbon dioxide has been absorbed by the oceans. with an atmospheric carbon content of more than 800 billion tons.

Metals are melted using coke made from coal and charcoal, two forms of impure carbon. In the iron and steel sectors, it is particularly crucial. Pencil leads, electric motor brushes, and furnace linings all include graphite.

A carbon atom has a nucleus made up of six protons and six neutrons that is encircled by six electrons. The first two electrons must occupy the inner atomic orbital according to quantum mechanics, while the other four electrons must have wavefunctions that only partially fill the second standard and three second primary orbitals.

To know more about Carbon visit:

https://brainly.com/question/22530423

#SPJ4

True statement of galvanic cell Option E) Reduction occurs at the anode and is where anions move towards.

There are constantly spontaneous oxidation-reduction events in galvanic cells. The electrons always travel from the anode to the cathode in any electrochemical cell.

Voltaic or galvanic cells are electrochemical devices that use spontaneous oxidation-reduction events to generate electricity. There are constantly spontaneous oxidation-reduction events in galvanic cells. The electrons always travel from the anode to the cathode in any electrochemical cell. Additionally, oxidation always occurs at the anode, while reduction always occurs at the cathode. The passage of electrons from the anode to the cathode is driven by the spontaneous nature of the reaction. Recall that reduction is the acquisition of electrons whereas oxidation is the loss of electrons. We always have an excess of electrons at the anode since oxidation takes place there, making it the negative electrode.

To learn more about galvanic cell Please click on the given link:

https://brainly.com/question/15096829

#SPJ4

The molecular formula of this molecule is found to be C₆H₈O₄

The empirical formula of the molecule is given to be C₃H₄O₂.

The molar mass of the molecule is given to be 144g/mol.

We know,

n(C₃H₄O₂) = Molecular formula of the molecule.

The value of n can be found as,

n = Molecular mass/Empirical formula mass.

The molar mass of carbon is 12g/mol.

The molar mass of hydrogen is 1g/mlol.

The molar mass of oxygen is 16g/mol.

So, the empirical formula mass of  C₃H₄O₂ will be,

= 3 x 12 + 4 x 1 + 2 x 16

= 36 + 4 + 32

= 72 g/mol.

Now, the value of n = 144/72

n = 2.

So, the molecular formula of the molecule is,

= 2(C₃H₄O₂)

= C₆H₈O₄.

The molecular formula of the molecule is C₆H₈O₄.

To know more about Molecular formula, visit,

https://brainly.com/question/26388921

#SPJ4

Answer:

Explanation:

Correct

Answer:

02

Explanation:

Hydronium is acidic, so the PH would have to be acidic

The density of air in a deep mine is greater compared with the density of air at the earth's surface.

The pressure exerted on a surface that is perpendicular to all directions and is caused by the weight of the air is referred to as atmospheric pressure. Additionally, as altitude increases, the pressure caused by air reduces because there is less air above an elevated position. This is because there is less air above an elevated place. In addition, the air is thinner at higher elevations because less dense gases can be found there since they float over denser gases. This causes the air to be thinner at higher elevations.

Want to know more about the density of air visit the link which is given below;

https://brainly.com/question/3551743

#SPJ4

Therefore, in ZnO + C Zn + CO, Zinc is reduced and Carbon is oxidised as a result of the loss of electrons (due to gain in electrons). Zinc's oxidation state decreases from +2 to 0, indicating that it is becoming reduced.

The material is referred to be an oxidising agent when it reduces itself and oxidised other substances. The oxidising agent in this case is ZnO. Carbon's oxidation state electrons rises from 0 to +2. ZnO is reduced in the reaction because it reduces CO to Zn by giving up its oxygen. On the other hand, CO is getting oxidised since it is receiving oxygen and generating CO2.

To learn more about electrons, click here.

https://brainly.com/question/1255220

#SPJ4

If a chemist dissolves 707.mg of pure sodium hydroxide in enough water to make up 100.mL of solution, then the pH of the solution will be 13.25.

Sodium hydroxide (NaOH) has no odour. It is made of solid white crystals that absorb water from the air. Sodium hydroxide is a caustic substance. Sodium hydroxide can be hazardous to workers who come into contact with it. The level of harm is determined by the amount, duration, and activity. It can cause temporary hair loss as well as burns to the eyes, skin, and inner membranes.

Manufacturers may use sodium hydroxide to make soaps, rayon, paper, explosives, dyes, and petroleum products. Other uses for sodium hydroxide include cotton fabric processing, metal cleaning and processing, oxide coating, electroplating, and electrolytic extraction. It is commonly found in commercial drain and oven cleaners.

M = mass / molar mass × liters of solution

M = 0.707 g / 40.0 g/mol × 0.100 L

M = 0.177 M

NaOH → Na⁺ + OH⁻

Molar ratio of NaOH to OH⁻ is 1:1, Then, [OH⁻] = 0.177 M.

pOH = -log [OH⁻]

pOH = -log 0.177

pOH = 0.752

pH + pOH = 14.00

pH = 14 - pOH = 14.00 - 0.752

pH = 13.25

Therefore, pH level of the solution is 13.25

Learn more about sodium hydroxide

https://brainly.com/question/29327783

#SPJ4

A chemist prepares a 100-mL solution by dissolving 707.5 mg of pure sodium carbonate in water. The pH of the solution is 13.25.

What is the solution described?

Any combination of one or more solutes that have been dissolved in a solvent is referred to as the solution. To create a homogenous mixture, one solute must dissolve in a solvent. To create a homogenous mixture, a solute must dissolve in a solvent.

What is an example of a solution?

Examples of solutions include salt water, rubbing alcohol, and sugar that has been dissolved in water. When salt and water are combined, the salt particles become invisible when seen closely, proving that the mixture is homogeneous.

Briefing:

Step 1: Calculate the molarity of NaOH

M = mass of solute / molar mass of solute × liters of solution

M = 0.707 g / 40.0 g/mol × 0.100 L

M = 0.177 M

Step 2: Write the basic dissociation reaction

NaOH → Na⁺ + OH⁻

The molar ratio of NaOH to OH⁻ is 1:1, Then, [OH⁻] = 0.177 M.

Step 3: Calculate the pOH

pOH = -log [OH⁻]

pOH = -log 0.177

pOH = 0.752

Step 4: Calculate the pH

pH + pOH = 14.00

pH = 14 - pOH = 14.00 - 0.752

pH = 13.25

To know more about solution visit:

https://brainly.com/question/1616939

#SPJ4

The drug is in solution form with concentration 10 mg/ml. To obtain an infusion rate of 3.8 g/h it must be given at rate of 380 ml/h

The problem can be solved using unitary method. First, find the value of single unit, then multiply that to get the necessary value.

For example:

price of 10 apples is $5, then

price of 1 apple is $5/10 = $0.5

price of 6 apples = 6 x $0.5 = $3

In the given problem, concentration 10 mg/ml means:

10 mg solute in 1 ml solution, which means

1 mg solute in 1/10 ml solution

3.8 g = 3800 mg solute in 3800 x 1/10 = 380 ml solution

Therefore the infusion rate 3.8 g/h = 380 ml/h

Learn more about concentration here:

https://brainly.com/question/14892287

#SPJ4

tube is red color and stopper that is used to collect specimens for serum analysis.

For determining plasma or whole blood, use a green top tube with lithium or sodium heparin. EDTA tubes are available with a royal blue top, a tan top, a pink top (used for blood bank testing), or a lavender top (used for trace metal whole blood or plasma determinations). For the majority of blood chemistries, a red-stopper tube is utilised to take a blood sample.EDTA tubes are used for analysing serum which is aquired after clotting which gives the permission to remove blood cell.

Learn more about EDTA tubes here:

https://brainly.com/question/29106155

#SPJ4

It is true that an oxide is thermodynamically more stable with respect to metal and oxygen gas at greater partial pressures of oxygen than at lower partial pressures of oxygen at a given temperature.

When a pure metal is oxidized at a high temperature, one or more oxides may occur. Oxidation is prevented if the partial pressure of oxygen is less than the equilibrium value. On the other hand, that metal will be reduced for an oxygen partial pressure that is lower than the equilibrium value at a specific temperature. The Ellingham diagram is used in metallurgy to forecast the temperature at which a metal, its oxide, and oxygen are at their equilibrium. A metal is oxidized if the atmospheric oxygen partial pressure is higher than the dissociation pressure, and it is reduced to a metal if it is lower than the dissociation pressure.

To learn more about  partial pressure click here https://brainly.com/question/15754440

#SPJ4

The process of which antibiotics get from the disk into the agar is called diffusion. Diffusion is the process of molecules moving from an area of high concentration to an area of lower concentration.

In the case of antibiotic disks on agar, the antibiotic molecules on the disk move outwards and into the surrounding agar. Diffusion works by allowing the molecules to move randomly in all directions until they reach an area of lower concentration. The molecules will continue to move until they reach a state of equilibrium, meaning that the molecules are evenly spread across the agar. This process is known as Brownian Motion.

When the antibiotic molecules diffuse into the agar, they are able to interact with the bacterial cells in the agar. If the antibiotic molecules can bind to molecules on the cell surface of the bacteria, then they can prevent the bacteria from functioning properly. This leads to the death of the bacteria, and the resulting zone of inhibition can be seen as a clear area around the disk.

Learn more about Brownian Motion at : https://brainly.com/question/28441932

#SPJ4

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%

To calculate mass percentage please visit:

https://brainly.com/question/13896694

#SPJ4

a current of 3.37 a is passed through a ni(no3)2 solution for 1.50 h . nickel is plated out of the solution is 5.5341 grams

W=E×c×t/F......(1)

where:

W=Mass (in g ) of an ion discharged at any electrode

E=Equivalent mass of that ion.

c = Current Passed in Ampere

t= time (in sec) during which electricity is passed.

F= 1 faraday = 96500C.

E= molar mass/ valency

=58.693/2

=29.3465

C= 3.37A

t= 1.50*60*60

F=96500

nickel is plated out of the solution is 5.5341 grams

Learn more about current here:

https://brainly.com/question/13076734

#SPJ4

In this case, the molarity of the nitric acid solution is (33.5 mL * 0.201 M) / 5 mL = 0.067 M.

In a titration, a measured volume of a solution with an unknown concentration (the titrant) is added to a known volume of a solution with a known concentration (the analyte) until the reaction is complete, at which point the concentration of the unknown solution can be calculated. In the case of a nitric acid solution, the concentration can be determined by titrating the acid solution with a standard solution of sodium hydroxide (NaOH), which has a known concentration. The volume of NaOH solution required to complete the reaction is used to calculate the concentration of the nitric acid solution using the following formula: Molarity of acid = (Volume of NaOH used * Concentration of NaOH) / (Volume of acid). This method allows for the accurate determination of the concentration of the nitric acid solution.

to know more about molarity

https://brainly.com/question/8732513

#SPJ4

The solution prepared by the adding the 2.70 g of acetic acid to the 122.8 g of the water . the percent by mass of the acetic acid in solution is  2.15 %.

given that :

mass of acetic acid = 2.70 g

mass of the water = 122.8 g

the mass of the solution = 2.70 g + 122.8 g

                                        = 125.5 g

the percent by mass of the acetic is given below :

percent by mass  =( mass of the acetic acid / mass of solution ) × 100 %

percent by mass = (2.70 / 125.5 ) × 100 %

percent by mass = 2.15 %

To learn more about percent by mass here

https://brainly.com/question/13009891

#SPJ4

The number of moles of sodium hydroxide in 0.05 grams can be calculated using the formula:

Number of moles = mass / molecular weight

The molecular weight of sodium hydroxide is 40 grams per mole, so the number of moles in 0.05 grams of sodium hydroxide is:

Number of moles = 0.05 grams / 40 grams/mol = 0.00125 moles

Thus, there are 0.00125 moles of sodium hydroxide in 0.05 grams of the substance. This is a very small amount, as one mole of any substance contains 6.022 x 10^23 atoms or molecules.

The volume (ml) of 0.1750 m naoh (aq) is needed to react completely with 25.00 ml of 0.1150 m h2so4 (aq). is 31.08ml.

Calculation:-

M₁ v₁ n+₁ = M₂ V₂ n+₂

0.1850 x v₁ X₁ =  0.1150 x 25X²

V₁ = 0.1150 × 25 x 2/ 0.1850

= 31.081 ml

Volume is defined as the space occupied within the bounds of an object in three-dimensional space. Also called the capacity of the object. Volume is a measure of her occupied three-dimensional space. Often quantified numerically using SI units or by various imperial or US customary units. The definition of length is related to volume. quantified numerically using SI units or by various imperial spaces.

Learn more about Volume here:- https://brainly.com/question/1972490

#SPJ4

The reaction [tex]C_{6} H_{12} O_{6} (aq) + 6O_{2} (g)[/tex] → [tex]6CO_{2} (g) + 6H_{2} O(l)[/tex] is best classified as an exothermic reaction.

Chemical reaction is a process in which the reactants react chemically and change into products through chemical transformation. For example, respiration - we breathe in oxygen, which reacts with glucose to produce carbon dioxide, water and energy.

A decomposition reaction breaks a molecule or compound into two or more simple new chemical substances. For example, the electrolysis of water. In a conjugation reaction, two or more molecules combine chemically to form a new substance (compound). Binding and decomposition reactions are opposites. For example, the combustion of a strip of magnesium (or magnesium) produces a gray-black ash consisting of magnesium oxide.

Combustion reactions are generally exothermic reactions that release energy in the form of heat. It's a reaction between a fuel and an oxidant (usually atmospheric oxygen) that usually produces smoke, water, and heat. In a neutralization reaction, acids and bases react to form salts and water. A chemical reaction in which oxidation and reduction occur simultaneously is called a redox reaction. Oxidation is the addition of oxygen and reduction is the addition of hydrogen (or removal of oxygen).

To learn more about types of chemical reactions, here

https://brainly.com/question/1071297

#SPJ4

The percentage yield is 77% when 15 g of N2 gas was reacted with excess H2 gas to produce Ammonia of mass 14g.

By Haber's process nitrogen and hydrogen combine to form Ammonia. The Haber Process goes on to explain the reasons for the conditions used in the process. The process combines nitrogen from the air with hydrogen derived mainly from natural gas into ammonia. The reaction is reversible and the production of ammonia is exothermic. Balanced equation for the reaction is,

N2 + 3H2 → 2NH3

1mol N2 will produce 2mol NH3

Molar mass N2 = 28g/mole

Molar mass NH3 = 17g/mole

28g N2 will produce 2*17 = 34g NH3

15g N2 will produce 15g/28g * 34gNH3

Mass of NH3 produced = 18.21 g NH3

It is  necessary to determine how much of the product should be formed based on stoichiometry. This is called the theoretical yield. It is the maximum amount of product that could be formed from the given amounts of reactants.  The percent yield is the ratio of the actual yield to the theoretical yield, expressed as a percentage:

Percent Yield=Actual Yield / Theoretical Yield × 100%

If actual production = 14g NH3 , % yield = 14g NH3 / 18.21 g NH3 * 100 =76.88%

= 77 %

To learn more about Haber's process please visit:

https://brainly.com/question/21867752

#SPJ4

Answer:

a. CH4+202→CO2+2H2O

b.Zn+2HCl→ZnCl2+H2

c.H2SO4+8HI→H2S+4I2+4H2O

d.4NaCl+2SO2+2H2O+O2→2Na2SO4+4HCl

The empirical formula of the compound can be determined using their number of moles. The mole ratio of the elements given is 1: 1: 3. Thus, its formula is HgNO₃.

The empirical formula of a compound is the formula derived from the number of moles of each element present in one mole of the compound. The number of moles can be calculated from their mass percents.

The mass percent of Hg is 76.4 %. that is  76.4 g in 100 g of the compound.

atomic mass of Hg = 200 g/mol.

number of moles in  76.4 g = 76.4 /200 = 0.38.

mass of nitrogen = 14 g/mol

number of moles in 5.33 g = 5.33 /14 = 0.38.

mass of oxygen = 16 g/mol.

number of moles in 18.3 g = 18.3 / 16 = 1.14.

Thus, their ratio of Hg, N and O is in 0.38 : 0.38 : 1.14. Convert this whole number ratio by dividing through out by the smallest number 0.38. So we arrive at the molar ratio of 1 : 1: 3.

Now, we don't have to balance anywhere and directly put these numbers into the formula and we get, HgNO₃.

To find more on empirical formula, refer here:

https://brainly.com/question/14044066

#SPJ1

Answer: Hydrogen Bonds!

Explanation: The strength or type of an intermolecular force can be determined by the electronegativity difference between the atoms. Hydrogen bonds are found within atoms that are highly electronegative. This means the difference is greater. This high difference leads to polarity and a stronger force.