# Molar Measurement: Question Preview (ID: 28743)

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**What is the formula mass (molecular mass) of Al(C2H3O2)3?**

a) 204 g/mol

b) 306 g/mol

c) 122 g/mol

d) 158 g/mol

**How many atoms of oxygen are in one formula unit of Al(C2H3O2)3?**

a) 6

b) 3

c) 2

d) 5

**How many grams is 3.0 x 10^23 atoms of gold?**

a) 106 grams

b) 95 grams

c) 197 grams

d) 25 grams

**How many mols is 3.0 x 10^23 atoms of silver?**

a) 0.48 mol

b) 2.0 mol

c) .75 mol

d) .33 mol

**626 grams of calcium carbonate is how many mols?**

a) 6.26 mol

b) 5.73 mol

c) 7.38 mol

d) 3.27 mol

**How many mols are 35 grams of potassium?**

a) 1.1 mol

b) 35 mol

c) 0.75 mol

d) 0.90 mol

**What is the molecular mass of sugar, C12H22O11**

a) 180 g/mol

b) 342 g/mol

c) 167 g/mol

d) 426 g/mol

**What is the atomic mass of lithium?**

a) 6.94 g/mol

b) 3 g/mol

c) 14.7 g/mol

d) 75 g/mol

**What is the molecular mass of CO2?**

a) 12 g/mol

b) 22 g/mol

c) 44 g/mol

d) 400 g/mol

**What is the mass of 1 formula unit (molecule) of Pb(NO3)2?**

a) 331 g/mol

b) 5.5 x 10^-23 grams

c) 5.5 x 10^-22 grams

d) 1.2 x 10^-21 grams

**What is the formula mass (molecular mass) of barium chloride?**

a) 137 g/mol

b) 172 g/mol

c) 70 g/mol

d) 207 g/mol

**308 grams of carbon dioxide would equal how many mols?**

a) 44 mols

b) 6.0 mols

c) 7.0 mols

d) 8.0 mols

**How many atoms are in 4.2 grams of zinc?**

a) 3.9 x 10^22 atoms

b) 6.3 x 10^22 atoms

c) 6.02 x 10^23 atoms

d) 4.2 atoms

**What mass would 7.1 x 10^24 molecules of CO2 weigh?**

a) 12 grams

b) 520 grams

c) 630 grams

d) 44 grams

**44.8 Liters of CO2, measured at STP, would have what mass?**

a) 63.7 grams

b) 22.4 grams

c) 44 grams

d) 88 grams

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