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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