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WorksheetsPractice Mole Calculations
Total questions: 12
Worksheet time: 29mins
How many molecules are there in 31.8 moles of water? (H2O has a molar mass of 18.0 g/mol)
572 g
1.91 x 1025 molecules
5.28x 10-25 molecules
1.77 g
Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person's diet should include a source of Vitamin C, such as orange juice. Ascorbic acid has a molecular formula of C6H8O6 and a molar mass of 176 grams per mole.
Determine the number of moles of vitamin C in an orange that contains 0.171 grams of vitamin C.
30.1 moles
1030 moles
.000971 moles
.0001 mole
What is the mass of 0.75 moles of (NH4)3PO4?
0.0044 g
91 g
110 g
74 g
How many molecules are present in 135 g of Teflon C2F4
6.13 x 1023 molecules
5.13 x 1023 molecules
8.13 x 10 23 molecules
9.13 x 1023 molecules
What is the molar mass of calcium hydroxide, Ca(OH)2?
74.1 g/mole
57.1 g/mole
58.1 g/mole
57.1 u
How many moles of tungsten atoms are there in 4.8 x 1025 atoms of tungsten?
1.3 x 10-1 moles
8.0 x 10-1 moles
1.3 x 10-2 moles
80 moles
What is the molar mass of chromium III sulfate ?
200.0 g
344.2 g
288.0 g
392.2 g
What is the number of moles in 9.63 L of H2S gas at STP?
3.54 mol
0.104 mol
216 mol
0.430 mol
How many atoms are present in a 13.5 gram sample of beryllium?
1.5 particles
9 particles
4.03 x1023 particles
9.02 x1023 particles
What is the molar mass of Zn(C2H3O2)2?
392.8g/mol
142.9g/mol
361g/mol
183.5 g/mol
