WorksheetsPractice: Mole Calculations
Total questions: 20
Worksheet time: 40mins
If you are given a sample of magnesium with a mass of 48 g, how many moles of magnesium do you have?
3 moles
1 mole
2 moles
4 moles
What is the number of moles of calcium in a 120 g sample, if the relative atomic mass of calcium is 40?
3 moles
4 moles
5 moles
2 moles
A sample of rock contains 252 g of iron. Calculate the number of moles of iron, given the relative atomic mass of iron is 56.
4 moles
4.5 moles
6 moles
5 moles
You are given a sample of sulfur weighing 4,064 g. How many moles of sulfur are present if the relative atomic mass of sulfur is 32?
120 moles
125 moles
130 moles
127 moles
If the relative atomic mass of magnesium is 24, how many grams of magnesium would correspond to 1 mole?
36 g
24 g
48 g
12 g
How many grams of calcium would make up 2 moles, given the relative atomic mass of calcium is 40?
120 g
100 g
80 g
60 g
Calculate the number of moles in 112 g of iron, knowing that the relative atomic mass of iron is 56.
4 moles
3 moles
1 mole
2 moles
Given a sample of sulfur weighing 64 g, how many moles are present if the relative atomic mass of sulfur is 32?
2 moles
1 mole
4 moles
3 moles
If you have 40 g of calcium, how many moles do you have, given the relative atomic mass of calcium is 40?
1.5 moles
1 mole
2 moles
0.5 moles
A sample contains 168 g of iron. How many moles does it contain if the relative atomic mass of iron is 56?
5 moles
4 moles
2 moles
3 moles
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
Calculate the number of moles of chlorine atoms in 55g of copper (II) chloride.
0.41 moles
0.82 moles
1.6 moles
.20 moles
What is the mass of 0.75 moles of (NH4)3PO4?
0.0044 g
91 g
110 g
74 g
Determine the mass of 2.40 moles of C6H12
201 g
115 g
230. g
353 g
What is the total mass, in grams, of a 0.75 mole sample of SO2?
16 g
24 g
32 g
48 g
How many grams are in 7.8 moles of NaCl?
476 grams
456 grams
452 grams
462 grams
Calculate the number of particles (atoms) in 0.250 moles of silver.
1.62 x 1025 atoms Ag
4.15 x 10-25 atoms Ag
1.51 x1023 atoms Ag
27.0 atoms Ag
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
