Chem1: Molar Conversions & % Composition

The molar mass of (NH₄)₂CO₃ is:

• 96.11

• 98.54

• 97.21

• 95.02

The molar mass of Ba(ClO₄)₂ is: 

• 336.23

• 335.14

• 337.45

• 336.36

What would be the mass of 5 moles of CO₂? 

• 220.05 g

• 220.05 mol

• 0.11 mol

• 8.80 g

What is the mass of 3.56 moles of H₂? 

• 7.18 g

• 1.77 mol

• 1.77 g

• 0.57 mol

How many moles would make up a sample of 14.8 grams of NaBr?

• 0.14 mol

• 1,522.77 mol

• 1,522.77 g

• 6.95 g

How many moles would make up a sample of 32.7 grams of NH₃?

• 19.19 mol

• 19.19 g

• 557.21 mol

• 0.43 g

How many molecules are present in 1.75 moles CO₂?

• 1.05 X 10²⁴ molecules

• 1.28 X 10^-22 molecules

• 2.91 X 10^-24 molecules

• 2.39 X 102²² molecules

How many atoms are present in 8.20 moles Cu?

• 4.94 x 10²⁴ atoms

• 1.36 x 10^-23 atoms

• 7.76 x 10²² atoms

• 3.14 x 10²⁶ atoms

How many atoms are present in 324 g Cr?

• 3.75 X 10²⁴ atoms

• 1.95 X 10²⁶ atoms

• 1.01 X 10²⁸ atoms

• 2.80 X 10^-20 atoms

How many molecules are present in 125 g CO₂?

• 1.71 X 10²⁴ molecules

• 7.53 X 10²⁵ molecules

• 3.31 X 10²⁷ molecules

• 9.14 X 10^-21 molecules