Chem Stoichiometry Percent Yield

In most chemical reactions the amount of product obtained is

• more than the theoretical yield.

• equal to the theoretical yield.

• more than the percent yield.

• less than the theoretical yield.

Tags

NGSS.HS-PS1-7

The coefficients in a chemical equation represent which type of ratio?

• mass to mass ratio

• mole to mole ratio

• mass to mole ratio

• mole to mass ratio

Tags

NGSS.HS-PS1-7

If % yield is 100% then which of the following is true?

• actual yield is greater than theocratical yield

• actual yield is less than theocratical yield

• actual yield is equal to theocratical yield

• there is no limiting reactant

Tags

NGSS.HS-PS1-7

Which of the following cannot be determined from the pictured equation?

• Moles of a product produced from a given amount of reactant.

• Mass of a product produced from a given amount of reactant.

• Number of atoms or molecules produced from a given amount of reactant.

• The volume of a liquid produced from a given amount of reactant

Tags

NGSS.HS-PS1-7

Which is true of the reaction shown below?

• Two molecules of Substance Y will be left over when this reaction goes to completion.

• Substance Y is the limiting reagent in this reaction.

• The addition of more molecules of Substance X will not affect the amount of Substance Z that can be made.

• The mole ratio of this reaction is 6:5:6.

Tags

NGSS.HS-PS1-7

Hello World

• 1 : 1

• 2 : 3

• 1 : 3

• 1 : 2

Tags

NGSS.HS-PS1-7

Which of the following would be investigated in reaction stoichiometry?

• the types of bonds that break and form when acids reacts with metals

• the mass of potassium required to produce a known mass of potassium chloride

• the amount of energy released in chemical reactions

• the mass of hydrogen and oxygen in water

Tags

NGSS.HS-PS1-7

Tags

NGSS.HS-PS1-7

Potassium chlorate decomposes to potassium chloride and oxygen. Using 6.68 mg of the starting material, what is the theoretical yield of potassium chloride (in grams)?

Tags

NGSS.HS-PS1-7

When 1.30 g of Lead iodide is produced, how much Sodium iodide (in g) reacted?

Tags

NGSS.HS-PS1-7