Mass Relationships

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

• #1 only

• #2 only

• #3 only

• #2 and #3 only

Tags

NGSS.HS-PS1-7

2 : 3

1 : 2

1 : 1

1 : 3

• 2 : 3

• 1 : 2

• 1 : 1

• 1 : 3

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

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

• 
• 
• 
• 

If a chemical reaction involving substance A and B stops when substance B is completely used up, then substance B is referred to as the

• excess reactant.

• limiting reactant.

• primary reactant.

• primary product.

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

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

In a chemical reaction, if 10 grams of reactant A reacts with 15 grams of reactant B to produce 20 grams of product C, what is the mass of the remaining reactant?

• 5 grams of reactant A

• 5 grams of reactant B

• 10 grams of reactant A

• 10 grams of reactant B

Tags

NGSS.HS-PS1-7