Stoichiometry Mole to Mass

What is the molar mass for water (H₂O)?

• 33 g/mol

• 14.32 g/mol

• 2.02 g/mol

• 18.02 g/mol

What is the molar mass of CO₂?

• 40.01 L/g

• 40.01 g

• 44.01 g/atom

• 44.01 g/mol

In solving a mass-mass (gram to gram) conversion, it is necessary to convert to the given mass to moles.

• true

• false

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NGSS.HS-PS1-7

What the are units for molar mass?

• grams/mole

• atoms/mole

• grams/atoms

• mloes/atom

What is the molar ratio between oxygen and carbon dioxide?

• 2 C₂H₂ + 5 O₂ -> 4 CO₂ + 2 H₂O

• 10 mol O₂ : 8 mol CO₂

• 5 mol O₂ : 4 mol CO₂

• 1 mol O₂ : 2 mol H₂O

Tags

NGSS.HS-PS1-7

What mass of NaCl can be produced from 0.75 mol of chlorine gas (Cl2)?

• 0.75 g

• 1.5 g

• 44 g

• 88 g

Tags

NGSS.HS-PS1-7

What mass of carbon dioxide (CO2) can be produced from 25.0 g of calcium carbonate (CaCO3)?

• 25.0 g

• 11.0 g

• 22.0 g

• 56.0 g

Tags

NGSS.HS-PS1-7

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

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