Mass and the Mole

In stoichiometry, chemists are mainly concerned with

• mole and mass relationships in chemical reactions.

• the types of bonds found in compounds.

• energy relationships in chemical reactions.

• the speed with which chemical reactions occur.

Tags

NGSS.HS-PS1-7

• #1 only

• #2 only

• #3 only

• #2 and #3 only

Tags

NGSS.HS-PS1-7

In the reaction pictured, how many moles of hydrogen will be formed when 4 mol of HCl are consumed?

• 6

• 4

• 2

• 8

Tags

NGSS.HS-PS1-7

For the reaction pictured how many moles of nitrogen gas (N2) are required to produce 18 mol of ammonia (NH3)?

• 18

• 9.0

• 4.5

• 36

Tags

NGSS.HS-PS1-7

If given the mass of methane (CH4) what can be calculated based on the balanced reaction below?

• The mass of the oxygen gas reacting along with the mass of carbon dioxide and water produced.

• Only the mass of carbon dioxide produced.

• Only the mass of oxygen gas reacting.

• Only the mass of ,carbon dioxide and water produced.

Tags

NGSS.HS-PS1-7

What is the correct ratio of nitrogen gas to lithium in the reaction pictured?

• 
• 
• 
• 

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.

Tags

NGSS.HS-PS1-7