The amount of caffeine in a 16 fl oz can of Monster's Energy Drink is roughly 160 mg, which is regarded as a moderate dose. Caffeinated than the typical coffee drink, which has between 95 and 200 mg per serving.
A Monster can contains how many mg?How so much caffeine is there in a complete can of Monster. Each 16-ounce can of Monster Energy has a whooping 160 mg of caffeine, more than double the amount in an 8-ounce Red Bull can and up to than double amount commonly encountered in an average coffee drink.
300 mg of caffeine—is that a lot?What Much of Coffee Is Recommended. Caffeine does not have negative effects on healthy adults when used in moderation, like many other meals, according to Karolin. 300 mg or less per day, or roughly three 8-ounce cups of coffee, is considered a moderate quantity.
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you found ΔTb = 5.3 C in the last stp. Use this an the information below to find the boiling pint of the solution(BP solutions)
To solve molality use the following equation: ΔTb = Kb x molality.
How to solve molality?Molality (m) is a measure of the concentration of a solution and is defined as the number of moles of solute per kilogram of solvent. To calculate molality, follow these steps:
Determine the mass of the solvent (in kilograms) used to make the solution. This can be measured directly or calculated from the volume and density of the solvent.Determine the number of moles of solute present in the solution. This can be calculated by dividing the mass of solute by its molar mass.Divide the number of moles of solute by the mass of the solvent (in kilograms). This gives the molality of the solution in units of moles per kilogram (mol/kg).To find the boiling point of the solution (BP solutions), the boiling point elevation constant (Kb) of the solvent and the molality of the solution. With these values, we can use the following equation:
ΔTb = Kb x molality
where ΔTb is the boiling point elevation, Kb is the boiling point elevation constant of the solvent, and molality is the molal concentration of the solution.
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Ca(OH)2 + 2HCl = CaCl2 + 2H2O
Go out to 3 decimal places for all values except 0.
In this reaction, 48.5 g of Ca(OH)2 and 32.8 g of HCl:
1) Determine how many moles of each reactant are present at the beginning of the reaction.
2) Convert one of the reactants into moles of the other reactant to determine whether or not it is the limiting reactant.
3) Convert moles of the excess reactant into moles of the product.
Moles of HCL present in the reaction is 0.899 moles
What is moles?The mole is the unit of substance that is equal to the number of atoms in 0.012 kilogrammes of carbon 12 and is represented by the sign "mol".
What is reaction?chemical reaction, the transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.
Use the following formula to calculate the moles of each reactant present at the start of the reaction:
Molar mass divided by mass equals a mole.
The molar mass of HCl is 36.461 g/mol (1.008 g/mol for H and 35.453 g/mol for Cl), while the molar mass of [tex]Ca(OH)_2[/tex] is 74.093 g/mol (40.078 g/mol for Ca, plus 215.999 g/mol for O and 21.008 g/mol for H).
Consequently, the amount of [tex]Ca(OH)_2[/tex] in the starting moles of the reaction is:
[tex]Ca(OH)_2[/tex] moles are equal to 48.5 g / 74.093 g/mol, or 0.654 moles.
At the start of the reaction, there are: moles of HCl present.
32.8 g of HCl divided by 36.461 g/mol yields 0.899 moles.
Since we have only 0.899 moles of HCl present, it is the limiting reactant. This means that all of the [tex]Ca(OH)_2[/tex] will react, and some of the HCl will be left over.
To convert this to grams, we use the formula:
mass = moles x molar mass
The molar mass of [tex]CaCl_2[/tex] is 110.984 g/mol (40.078 g/mol for Ca and 2*35.453 g/mol for Cl).
Therefore, the mass of [tex]CaCl_2[/tex] produced is:
mass of [tex]CaCl_2[/tex] = 0.654 moles x 110.984 g/mol = 72.6 g
So, 48.5 g of [tex]Ca(OH)_2[/tex] and 32.8 g of HCl will produce 72.6 g of [tex]CaCl_2[/tex] and 2 moles of [tex]H_2O[/tex].
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The average kinetic energy of particles is affected by both the mass of the particles and
how fast they move. While mass plays an important role, how fast the particles move
affects the energy much more. Temperature reflects the amount of kinetic energy a
sample's particles has.
Which of the following has the least thermal energy?
20 g of metal at 70°C
10 g of metal at 70°C
20 g of metal at 10°C
10 g of metal at 10°C
Answer:
Temperature is a measure of the average kinetic energy of the particles in a substance. Therefore, the substance with the least thermal energy would be the one with the lowest temperature and the lowest mass.
Using this information, we can see that the substance with the least thermal energy is 10 g of metal at 10°C. This is because it has both a lower temperature and a lower mass than the other substances listed. The other substances have a higher temperature and/or a higher mass, which means they have more kinetic energy and therefore more thermal energy.
i need help pleaseee!!!
The number of atoms of each element is now the same on both sides, so the equation is balanced.
On both sides of the equation, are there the same number of atoms for each element?Nothing can be created or destroyed, according to the conservation of matter principle. The quantity of each element's atom in the reactants and the quantity of that same element in the products must match in chemical equations.
When are two atoms equal?As soon as atoms distribute their electrons uniformly, a nonpolar covalent bond is formed. Normally, this happens when two atoms have comparable or identical electron affinities. The greater the attraction, the closer the values of their electron affinities are. This happens in gas molecules, also referred to as diatomic substances.
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Which term is best used to classify sodium chloride mixed in water (salt water) at room temperature?
The term that best classifies sodium chloride mixed in water at room temperature is a homogeneous mixture or solution.
~~~Harsha~~~
Answer:
It is homogeneous
Explanation:
1AgNO3+1NaBr->1AgBr+1NaNo3
If 15.0g silver nitrite is reacted with excess sodium bromide, how many moles of silver bromide will form?
0.0882 moles of silver bromide (AgBr) will form.
calculating the number of moles of silver nitrate (AgNO₃) used in the reaction:
moles of AgNO₃ = mass / molar mass
The molar mass of AgNO₃ is:
AgNO₃: 107.87 + 14.01 + 3(16.00) = 169.87 g/mol
So, the number of moles of AgNO₃ used is:
moles of AgNO₃ = 15.0 g / 169.87 g/mol = 0.0882 mol
Since the reaction occurs in a 1:1 ratio of AgNO₃ to AgBr, the number of moles of AgBr produced will also be 0.0882 mol.
Therefore, 0.0882 moles of silver bromide (AgBr) will form.
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In the alkene, when treated with HCl, it shows an increase in weight of 52.14%. what is the molecular formula of alkene?
Answer:
CnH2n
Explanation:
Alkenes are either branched or unbranched hydrocarbons with at least one carbon–carbon double bond (CC) and have a general formula of CnH2n.
Determine the boiling point of a solution prepared by dissolving 119 g ethanol (CH3CH2OH) in 425 g water.
Which of the following is a way that animals can help the environment? (2 points)
a
Overpopulating
b
Producing oxygen
c
Spreading disease
d
Spreading seeds
A-scientist has a 2.5 g-sample of radium-226: How many grams of the sample will decay.in-800
-years if the half-life is 1600-years?
The mass (in grams) of the sample that will decay in 800 years, given that the half-life is 1600-years is 0.78 g
How do i determine the amount that will decay in 800 years?We shall begin our calculation by obtaining the number of half lives that has elapsed after 800 years. Details below:
Half-life (t½) = 1600 yearsTime (t) = 800 yearsNumber of half-lives (n) =?n = t / t½
n = 800 / 1600
n = 0.5
Next, we shall determine the amount remaining after 800 years. Details below:
Original percentage (N₀) = 2.5 gNumber of half-lives (n) = 0.5Amount remaining (N) = ?N = N₀ / 2ⁿ
N = 2.5 / 2^0.5
N = 1.77 g
Finally, we shall obtain the mass of the sample that has decayed in 800 years. Details below:
Original amount (N₀) = 2.5 gAmount remaining (N) = 1.77 gMass that decay =?Mass that decay = N₀ - N
Mass that decay = 2.5 - 1.77
Mass that decay = 0.78 g
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What would be the bond type (covalent, polar covalent, ionic) for both B-H bonds in BH2? Explain in a short sentence.
Answer: non-polar covalent
Explanation:
If two atoms have an electronegativity difference of 0.4 or less, they form a non-polar covalent bond.
B is 2.04 electronegativity
H is 2.20 electronegativity
the electronegativity difference is 0.16.
this is less than 0.4 so the bonds are non-polar covalent.
A benzoic acid pellet weighing 6.54 g is placed in a bomb calorimeter along with 0.35 g fuse wire. The benzoic acid is ignited, and the temperature rise is 3.6°. What is the heat capacity of this calorimeter?
What is the basic mechanism of immunohistochemistry technique?
Answer:
I hope this helps :)
Explanation:
Immunohistochemistry (IHC) is a powerful technique that exploits the specific binding between an antibody and antigen to detect and localize specific antigens in cells and tissue, most commonly detected and examined with the light microscope.Jan 1, 2020
If you have 155 mL solution of a 0.762 mL solution of a 0.762 M FeCl3 solution, how many grams of FeCl3 are contained in this sample?
CHEMISTRY IN INDUSTRY, HEALTH, FOOD, LIFE, and the ENVIRONMENT
This assignment gives us an opportunity for us to engage and continue to dialogue with one another. We will explore the role of chemistry in our everyday life, as it pertains to industry, health, and the environment. Chemistry can help us to understand, monitor, protect, and improve the environment around us. Chemists use analytical tools and techniques to assess and measure air and water pollution due to environmental chemicals. This has helped to build the evidence that shows how our climate has changed over time. In drug and food development chemistry has a major cornerstone to foster the treatment of illnesses and wellness and to foster the availability of food.
Have a look at the following two Figures attached and use the periodic table of elements and natures in addition to your own research and reflect on how you see the chemistry and its application. Your task, select an aspect that is of interest to you and write a short reflection on how you currently perceive chemistry,
Food, clothing, shelter, health, energy, and clean air, water, and soil are all dependent on chemistry. Chemical technologies improve our quality of life in a variety of ways by solving problems in health, materials, and energy utilization.
Chemistry in everyday lifeChemistry is important in the development of technological solutions. Chemists contribute to lower transportation emissions in a variety of ways, from generating cleaner fuels (such as low sulfur fuels) to enhancing engine efficiency.Environmental chemistry examples include: Counting the amount of pollutants in a sample of water or soil. Using chemistry knowledge to offer alternative ecologically acceptable compounds for usage in products. Creating chemicals with functionalities that replace poisons.For more information on chemistry in everyday life kindly visit to
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Use the kinetic-molecular theory to explain each observation given.
a. Wax melts near the flame of a burning candle.
b. Liquid water may be converted into ice cubes in a freezer.
c. Ginger ale flows to match the shape of a glass.
d. Water gradually evaporates from a swimming pool.
e. Water vapor condenses inside house windows on cold days.
f. Snow gradually disappears, even when the tem- perature remains below freezing. g. Solids and liquids cannot be compressed as much as gases.
a. Wax melts near the flame of a burning candle because the kinetic-molecular theory states that the higher the temperature, the faster the molecules move. Since the flame of a burning candle is hot, the wax molecules move faster, allowing them to take up more space and eventually melt.
What is kinetic-molecular theory?The kinetic-molecular theory is based on the following five fundamental principles:
A gas's average molecular lengths between its constituent molecules are significantly greater than their individual sizes. The volume occupied by the gas' molecules is negligible in comparison to the volume of the gas itself.Both the molecules and the container walls are not attracted to one another in a perfect gas.As physical objects, the molecules move erratically and continually and are governed by Newton's laws of motion. The molecules travel in a straight line until they come into contact with one another or the container walls. Collisions are totally elastic; even if the kinetic energies and orientations of two molecules may change during a collision, the total kinetic energy is preserved. Collision is not "sticky".The average gas molecule's kinetic energy and absolute temperature are directly correlated. Because individual molecules' velocities and kinetic energies will vary greatly, with some even experiencing zero velocities at some moments, the word "average" is significant in this context. This implies that all molecular motion would cease if the temperature dropped to absolute zero.
Continued:b. Due to the fact that the kinetic-molecular theory predicts that molecules move more slowly at lower temperatures, liquid water can be frozen into ice cubes in a freezer. The water molecules travel very slowly and arrange because a freezer is significantly colder than room temperature, which enables them to form ice cubes.
c. All matter is made up of a large number of tiny particles that are always in motion, according to the kinetic-molecular theory. When the ginger ale is poured into the glass, the velocity of the liquid's molecules causes them to spread out and fill the form of the vessel.
d. The kinetic-molecular theory states that the molecules in a liquid are in constant motion, and that when they move, they bump into each other, passing energy from one to the other. This energy causes the particles to move faster. As they move faster, they create turbulence that causes them to break away from the liquid surface. These particles then form a vapor, which is an invisible form of water called water vapor. As these particles accumulate together, they gradually evaporate from the swimming pool, eventually diminishing its water level.
e. Water vapor condenses inside house windows on cold days because the molecules of water vapor slow down and as they lose energy they no longer have enough kinetic energy to remain in the gaseous state. The molecules then condense and form liquid water droplets on cool surfaces such as windows.
f. Snow gradually disappears even when the temperature remains below freezing because the heat stored in the snow starts to melt the snow. This occurs even when the outside temperature remains at freezing or below because the heat is released from the snow and warms the surrounding air.
g. Solids and liquids cannot be compressed as much as gases because the particles of gases have more energy and thus more freedom of movement than particles of solids and liquids. The particles of gases can move around and can occupy larger spaces than particles of solids and liquids, allowing them to be compressed more effectively.
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solid nickel (ii) chlorate is heated in a test tube resulting in the production of solid nickel(ii) chloride and oxygen
balance equation(state)?
type of reaction
A solution of antifreeze is prepared by mixing 47.0mL of ethylene glycol (d = 1.11 g/mL; molar mass = 62.07 g/mol) with 50.0 mL H2O (d = 1.00 g/mL) at 25°C. If the density of the antifreeze solution is 1.07 g/mL, what is its molarity?
At 25°C, combine 47.0 mL of ethylene glycol (d = 1.11 g/mL; molar mass = 62.07 g/mol) with 50.0 mL of water (d = 1.00 g/mL) to create an antifreeze solution. The antifreeze solution's molarity is 0.0086 M if its density is 1.07 g/mL.
What is antifreeze solution?Antifreeze is an additive that reduces a water-based liquid's freezing point. To achieve freezing-point depression for cold conditions, an antifreeze combination is utilized. Common antifreezes also raise the liquid's boiling point, enabling a rise in coolant temperature. However, every typical antifreeze addition also has a lower heat capacity than water, which makes it less effective as a coolant when combined with water.
The combination of a solution's freezing and boiling temperatures depends on the amount of dissolved components present. Therefore, salts cause aqueous solutions' melting points to decrease. Although salts are widely used for de-icing, salt solutions should not be utilized in cooling systems as they cause metal corrosion. Because they typically have melting values that are lower than those of water, low molecular weight organic substances can be used as antifreeze. Alcoholic organic compound solutions, in particular, are useful. Since antifreezes were first made commercially available in the 1920s, they have all been composed primarily of alcohols such methanol, ethanol, ethylene glycol, and others.
Molarity = [tex]\frac{mole}{volume}[/tex]
To calculate the moles of ethylene glycol.
The mass of ethylene glycol is 47.0 mL × 1.11 g/mL = 52.17 g.
Since molar mass of ethylene glycol is 62.07 g/mol, the moles of ethylene glycol is:
[tex]\frac{52.17}{62.07}[/tex] = 0.84 mol
To calculate the total volume of the antifreeze solution. We know that the volumes of ethylene glycol and H₂O are 47.0 mL and 50.0 mL, respectively.
Therefore, the total volume of the antifreeze solution is 47.0 mL + 50.0 mL = 97.0 mL.
Finally, the molarity of the antifreeze solution can be calculated using the formula
Molarity = [tex]\frac{mole}{volume}[/tex]
Therefore, the molarity of the antifreeze solution is:
[tex]\frac{0.84}{97.0}[/tex] = 0.0086 M
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What mass in grams of tin would be required to completely react with 1.20 L of 0.750 M HBr in the following chemical reaction?
Sn(s) + 4 HBr(aq) → SnBr₄ (aq) + 2 H₂ (g)
26.71 g mass of tin would be required to completely react with 1.20 L of 0.750 M HBr.
What is mass ?
Mass is a measure of the amount of matter in an object or substance. It is often expressed in units of grams (g) or kilograms (kg). Mass is a fundamental property of matter and is different from weight, which is the force exerted on an object by gravity and varies depending on the object's location. Mass can be measured using a balance or scale, and is an important factor in many chemical calculations and experiments, such as determining the amount of reactants needed for a reaction or the concentration of a solution.
First, we need to determine the number of moles of HBr in the solution:
moles of HBr = Molarity x Volume
moles of HBr = 0.750 mol/L x 1.20 L
moles of HBr = 0.900 mol
According to the balanced chemical equation, 1 mole of Sn reacts with 4 moles of HBr to produce 1 mole of SnBr₄. Therefore, the number of moles of Sn required can be calculated as:
moles of Sn = (moles of HBr) / 4
moles of Sn = 0.900 mol / 4
moles of Sn = 0.225 mol
The molar mass of Sn is 118.71 g/mol, so the mass of Sn required can be calculated as:
mass of Sn = moles of Sn x molar mass of Sn
mass of Sn = 0.225 mol x 118.71 g/mol
mass of Sn = 26.71 g
Therefore, 26.71 g of tin would be required to completely react with 1.20 L of 0.750 M HBr.
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Complete question is: 26.71 g mass in grams of tin would be required to completely react with 1.20 L of 0.750 M HBr in the chemical reaction. Sn(s) + 4 HBr(aq) → SnBr₄ (aq) + 2 H₂ (g)
Calculate the number of molecules of Freon-12 in 4.75 mg of Freon-12. What is the mass of chlorine in 4.75 mg of Freon-12?
The mass of chlorine in 4.75 mg of Freon-12 is approximately 1.39 x [tex]10^{-3}[/tex]g.
What is Mass?
Mass is a fundamental property of matter that measures the amount of substance or material present in an object. It is a scalar quantity and is typically measured in units such as grams (g) or kilograms (kg) in the metric system, or pounds (lb) or ounces (oz) in the imperial system.
Freon-12, also known as dichlorodifluoromethane, is a chlorofluorocarbon (CFC) compound that was used as a refrigerant and propellant in aerosol products. Its chemical formula is CCl2F2.
The atomic masses of carbon (C), chlorine (Cl), and fluorine (F) are approximately 12.01 g/mol, 35.45 g/mol, and 18.998 g/mol, respectively.
The molar mass of Freon-12 (CCl2F2) is:
Molar mass of Freon-12 = 12.01 g/mol (C) + 2 x 35.45 g/mol (Cl) + 2 x 18.998 g/mol (F)
= 120.91 g/mol
Next, we use the formula:
moles = mass / molar mass
to calculate the number of moles of Freon-12 in 4.75 mg:
moles of Freon-12 = 4.75 mg / 120.91 g/mol
= 3.92 x 10^-5 mol
Finally, we use Avogadro's number to calculate the number of molecules of Freon-12:
Number of molecules = moles of Freon-12 x Avogadro's number
= 3.92 x[tex]10^{-5}[/tex] mol x 6.022 x[tex]10^{23[/tex] molecules/mol
= 2.35 x [tex]10^{19}[/tex] molecules
To calculate the mass of chlorine in 4.75 mg of Freon-12, we can use the molar mass of chlorine (Cl) and the moles of Freon-12 calculated above.
The molar mass of chlorine (Cl) is 35.45 g/mol.
Mass of chlorine in Freon-12 = moles of Freon-12 x molar mass of chlorine
= 3.92 x [tex]10^{-5}[/tex] mol x 35.45 g/mol
= 1.39 x [tex]10^{-3}[/tex] g
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Which of the following reactions is associated with the lattice energy of MgSe (ΔH°latt)?
Mg(s) + Se(s) → MgS(s)
Mg2⁺(g) + Se2⁻(g) → MgSe(s)
Mg2⁺(aq) + Se2⁻(aq) → MgSe(s)
MgS(s) → Mg(s) + Se(s)
MgSe(s) → Mg2⁺(aq) + Se2⁻(aq)
Answer: Mg2⁺(g) + Se2⁻(g) → MgSe(s)
Explanation: This response includes the arrangement of one mole of MgSe(s) from its constituent vaporous particles, and the discharge of cross section vitality. The other responses recorded don't include the arrangement of MgSe from its constituent particles within the gas stage, so they are not related with the grid vitality of MgSe.
Question 9 of 10
Which of the following is an example of a Brønsted-Lowry acid?
OA. NH4+
OB. F
OC. BF3
OD. NH3
SUBMIT
The correct answer is option A, [tex]NH_{4}^{+}[/tex] which is an example of a Brønsted-Lowry acid.
Brønsted-Lowry acid:
According to the Brønsted-Lowry theory, an acid is a substance that donates a proton ([tex]H^{+}[/tex]), while a base is a substance that accepts a proton.
[tex]NH_{4}^{+}[/tex]can act as an acid because it can donate a proton to a base. In this case, [tex]NH_{4}^{+}[/tex]can donate a proton to a water molecule, forming [tex]NH_{3}[/tex] an H3O+. Therefore, [tex]NH_{4}^{+}[/tex]is an example of a Brønsted-Lowry acid.
Option B, F, is a Brønsted-Lowry base because it can accept a proton to form HF. Option C, [tex]BF_{3}[/tex], is not an acid or a base according to the Brønsted-Lowry theory because it does not contain any hydrogen atoms that can donate protons. Option D, [tex]NH_{3}[/tex], is a Brønsted-Lowry base because it can accept a proton to form [tex]NH_{4}^{+}[/tex].
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Complete question is: [tex]NH_{4}^{+}[/tex] is an example of a Brønsted-Lowry acid.
which three (3) patterns are true regards to seasons on earth
Three patterns that are true regarding seasons on Earth are: 1. Seasons are caused by the tilt of Earth's axis. 2. Seasons are opposite in the Northern and Southern Hemispheres. 3. Seasons are characterized by changes in temperature and weather patterns.
As Earth orbits around the sun, different parts of the planet receive varying amounts of sunlight depending on their angle to the sun.
When it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere, and vice versa.
For example, summer is typically associated with warm temperatures, longer days, and increased humidity, while winter is associated with colder temperatures, shorter days, and often snow or rain.
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Question
How do plants make their own food?
Drag and drop the words into the boxes to correctly complete the explanation.
The process of Response area allows plants to make their own food. In this process, plants capture the energy of Response area. They use the energy to combine Response area and water. The products include Response area, which is food for the plant. The other product is Response area, which the plant releases into the air.
The answers we got
sunlight
photosynthesis
oxygen
carbon dioxide
glucose
pls help its a master and i have a week or 2 left
Photosynthesis is the method by which plants produce their own food. Plants and other living things employ the process of photosynthesis to transform light into chemical energy that is then stored as starch that can be used at a later time. A vital step in plant growth is photosynthesis.
In your own words, describe how plants produce their own food ?.As autotrophs, plants produce their own sustenance. During the process of photosynthesis, they turn water, sunlight, and carbon dioxide into oxygen or simple sugars that the plant uses as fuel. These fundamental producers, which form the basis of an ecosystem, provide food for subsequent trophic levels.
Why is light essential for plants to produce food?Plants use the energy of a sun's light during the process of photosynthesis. Where the carbon dioxide and water are combined to create glucose, which the plants use as nourishment, using the trapped light energy to convert into chemical energy.
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How many moles of AgI will be formed when 75.0 mL of 0.300 M AgNO3 is completely reacted according to the balanced chemical reaction:
2AgNO₃(aq)+ Cal2(aq)-->2Agl(s)+Ca(NO3)2(aq))
The number of moles of AgI that will be formed when 75.0 mL of 0.300 M AgNO₃ is completely reacted is 0.0225 moles.
How to calculate number of moles?The number of moles of a substance can be calculated from a stoichiometric approach.
Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
According to this question, the following reaction is given: 2AgNO₃(aq) + Cal2(aq)-->2Agl(s) + Ca(NO3)2(aq)
moles of AgNO₃ = 0.075 × 0.3 = 0.0225 moles
If 2 moles of AgNO₃ reacted to produce 2 moles of AgI, then 0.0225 moles of AgI will also be produced.
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Do you think there would be any difference in conductivity between a solution, a solution 10x more concentrated, and a solution 10x less concentrated?
Diluting a solution increases the amount of ions in the solution and gives them more room to move about, which increases the mobility of the ions and raises the molar conductivity in the solution at the same time.
What is a remedy?A solute dissolving agent, used to create homogenous mixtures. To create a homogenous mixture, a solute must dissolve in a solvent.Although solutions of both solids and gases are possible, the term "solution" is most frequently used to refer to the liquid condition of matter.
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Consider this unbalanced equation: Pb + HCI -> PbCl2 + H₂
a. If we allow 30g of Hydrogen gas to form (H2), how many moles of HCI were
needed?
b. What if we allowed 9.2 moles of PbCl₂ to form. How many grams of HCI were
needed?
a) Moles of HCI that were needed is 14.88 mol ; b) Grams of HCI that were needed is 670.14 g.
What is meant by balanced equation?Equation where number of atoms of each element in the reactant is equal to the number of atoms of the same element in the products is called as the balanced equation.
a.) 30 g / 2.016 g/mol = 14.88 mol of H₂
From the balanced equation, we can see that one mole of H₂ is produced for every mole of HCl consumed. Therefore, the number of moles of HCl needed is also 14.88 mol.
b.) 2 moles of HCl are consumed for every mole of PbCl₂ produced
So, the number of moles of HCl needed to produce 9.2 moles of PbCl₂ is:
9.2 mol PbCl₂ × 2 mol HCl/mol PbCl₂ = 18.4 mol HCl
18.4 mol × 36.46 g/mol = 670.14 g of HCl
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Can someone help! The diagram shows a cross section of the Earth near its surface.
In the diagram, continental crust is labeled ___, and oceanic crust is labeled ____
A. 1; 2
B. 3; 1
C. 2; 1
D. 1; 3
The thinner and denser layer labelled "2" in the diagram represents the marine crust, while the thicker and less dense layer labelled "1" represents the continental crust. Therefore, A. 1; 2 is the right response.
Which of the crust layers is thicker and less dense?The land on Earth is made up of the continental crust, which is less dense, thicker (between 35 and 70 km), and primarily composed of the rock granite. The majority of the ocean is made up of oceanic crust, which is denser, thinner (5–7 km), and primarily composed of the rock basalt.
The crust of the continent is dense or less dense.With a density of around 2.7 grammes per cubic cm, continental crust has a largely granitic composition and is slightly lighter than Oceanic crust has a density of roughly 2.9 to 3 grammes per cubic centimetre and is composed of basalt, which is richer in iron and magnesium than granite.
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When lead (II) nitrate reacts with sodium iodide, sodium
nitrate and lead (II) iodide are formed. If you start with 25.0
grams of lead (II) nitrate and 15.0 grams of sodium iodide, how
many grams of sodium nitrate can be formed?
Answer:
20.44 grams of sodium nitrate can be formed
Explanation:
The balanced chemical equation for the reaction between lead (II) nitrate and sodium iodide is:
Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2
If both compounds are strong electrolytes, which compound would have the higher conductivity
Show a greater conductivity than the covalent compound. This is because of the existence of strong electrostatic forces between the ions of the ionic compounds.
What are the forces ?A force is an external agent capable of changing a body's state of rest or motion. It has a magnitude and a direction.A force is not something that an object contains or 'has in it'. A force is exerted on one object by another. The idea of a force is not limited to living things or non-living things.
What are ions ?it is formed by the loss or gain of an electron by an atom. Ions are of two types: cations and anions. For example, A sodium ion (Na+ ) is formed when a sodium atom loses one electron.
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