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Mass-Mole Conversions Worksheet
Molar mass of a substance = mass of one mole of the substance
One mole of an element = the atomic mass of that element (from the periodic table)
One mole of a compound = the sum of the atomic masses of the atoms present in the compound
The units of molar mass are always grams per mole (g/mol).
Directions: Solve each of the following problems. Show all work!
1. What is the mass of one mole of H?
2. What is the mass of one mole of Na?
3. What is the mass of one mole of H2O?
4. What is the mass of one mole of NaCl?
5. How many moles are in 36.0g of H2O?
6. How many moles are in 22.5 g of H2O?
7. How many moles are in 2.00 g of NaCl?7
8. How many moles are in 5.9 g of NaCl?
9. What is the mass of one mole of C2H6O (ethanol)?
10. How many moles are in 25.0 mL of C2H6O? The density of C2H6O is 0.785 g/mL.
(Hint: Use the formula: mass = density × volume.)
Mass-Mole Conversions Worksheet
Given the following, find the number of moles:
1)
30.00 grams of H3PO4
2)
25.0 grams of HF
3)
110.0 grams of NaHCO3
4)
1.1 grams of FeCl3
5)
987 grams of Ra(OH)2
6)
564 grams of copper
7)
12.3 grams of CO2
8)
89 grams of Pb(CH3COO)4
Given the following, find the number of grams:
9)
4.00 moles of Cu(CN)2
10)
5.600 moles of C6H6
11)
21.30 moles of BaCO3
12)
1.200 moles of (NH4)3PO3
13)
9.30 x 10-3 moles of SmO
14)
6.60 moles of ZnO
15)
5.40 moles of K2SO4
16)
88.4000 moles of NI3