WorksheetsMole Concept
Total questions: 12
Worksheet time: 32mins
Class :
Nomer Absen :
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
Identify the number of Chlorine atoms in 65.8 g CaCl2.
7.14 x 1023 atoms
8.71 x 1023 atoms
1.22 x 1023 atoms
3.57 x 1023 atoms
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 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
How many grams of silicon (atomic mass = 28.1 amu) would there be in a sample that contained 9.99 x 1022 atoms?
1.69 g
4.66 g
1.66 g
1.79 g
A student needs 65.0 g of copper(II) chloride for an experiment. How many atoms of copper is this?
2.91 x 10^23 atoms
3.91 x 10^25 atoms
2.35 x 10^23 atoms
4.70 x 10^23 atoms
