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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