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WorksheetsMole concept
Total questions: 15
Worksheet time: 28mins
How many moles are 98.3 grams of aluminum hydroxide, Al(OH)3? (Atomic mass of Al = 27, H= 1, O = 16)
1.26 moles
0.8 moles
7,673.4 moles
150 moles
How many atoms are contained in 25 g of NaBr? (Atomic mass of Na = 23, Br = 35)
102.96 molecules
0.24 molecules
1.45x1023 molecules
2.34 x 1020molecules
How many grams are in 1.2 x 1024 molecules of CO? (molar mass of CO = 28 g/mol)
28.2 g
55.8 g
6.02 g
1.2 g
6.02 x 1023 _____.
How many molecules are in 2.00 moles of H2O?
124x1024 molecules of H2O
1.20x1023 molecules of H2O
12.04 x1023 molecules H2O
124
What is the volume of 5 moles of oxygen gas at room temperature?
112 dm3
112 cm3
120 L
120 mL
A container with a volume of 893 L contains how many moles of air at STP?
2.5 x 10-2 mol
39.9 mol
22.4
2.7 x 10-2 mol
How many Mg 2+ ions are found in 1.00 mol of MgO?
3.01 x 10 ^23
12.04 x 10 ^23
6.02 x 10 ^23
6.02 x 10 ^25
How many moles are 98.3 grams of aluminum hydroxide, Al(OH)3? (Ar Al=27, H=1, O=16)
1.26 moles
0.8 moles
7,673.4 moles
150 moles
How many Mg atoms are present in 3.00 moles of MgCl2 ?
1.81 x 10^24
3.02 x 10^24
12.0 x 10^25
16.0 x 10^23
