Stoichiometry Mole to Mass

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

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

Given the pictured equation, how may moles of hydrogen gas (H2) would be produced from 1.00 mole of Zinc (Zn) if there was a 85.0% yield?

• .850 mole

• .750 mole

• 1.00 mole

• There is no way to determine this answer.

Tags

NGSS.HS-PS1-7

Given the pictured equation, what is the ratio of Zn to HCl needed to completely react all reactants

• 1 L Zn to 2 L HCl

• 1 mole Zn to 2 mole HCl

• 1 g Zn to 2 g HCl

• There is no way to determine this answer.

• #1 only

• #2 only

• #3 only

• #2 and #3 only

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

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

• 2 : 3

• 1 : 2

• 1 : 1

• 1 : 3

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

Mole ratios are obtained from the

• balanced chemical equation

• periodic table

• molar mass