Stoichiometry Mass and Mole Calculations

A mass of 6 g of Carbon contains

• 1 mole of C

• 2 moles of C

• 0.5 moles of C

How many moles are in 22 g of argon? 

• 880 moles

• 0.55 moles

• 1.81 moles

• 5 moles

How many moles are in 15 grams of lithium?

• 0.5 moles

• 104.1 moles

• 2.2 moles

Calculate the molar mass of propane (C₃H₈).

• 13 g/mol

• 44 g/mol

• 99 g/mol

How many moles are in 9.8 grams of calcium?

• 0.2 moles

• 4.1 moles

• 1 mole

What is the molar mass of NaOH?

• 368 g/mole

• 40 g/mole

• 57 g/mole

Mole ratios are obtained from the

• coefficients in a balanced chemical equation

• periodic table

• molar mass

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?  

P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

• 6:4

• 4:6

• 1:3

• 3:1

Tags

NGSS.HS-PS1-7

2Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

• 0.85 g

• 290 g

• 450 g

• 870 g

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

How many grams of KCl can be produced from 356 grams KBr?

• 749 g

• 225 g

• 479 g

• 814 g

Tags

NGSS.HS-PS1-7