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WorksheetsMole Calculation
Total questions: 18
Worksheet time: 36mins
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 in 55g of copper chloride (CuCl₂)
0.41 moles
0.82 moles
1.6 moles
0.20 moles
What is the mass of 0.75 moles of (NH4)3PO4?
0.0044 g
91 g
110 g
74 g
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 atoms are in 13.5 grams of Beryllium?
1.5 atoms
9 atoms
4x1023 atoms
9x1023 atoms
A sample of silver contains 5.71 x 1022 atoms. How many moles of silver are present?
3.43 x 1046 moles
0.0529 moles
0.0948 moles
10.5 moles
What is the molar mass of Zn(C2H3O2)2?
392.8g/mol
142.9g/mol
361g/mol
183.5 g/mol
Determine the mass of 2.40 moles of C6H12
201 g
115 g
230. g
353 g
A beaker contains 3.0 moles of copper. How many grams of copper are in the beaker?
190.7 g
21.2 g
0.047 g
86.3 g
To melt the ice, Cindy throws 455 g of calcium chloride, CaCl2 on her sidewalk. How many moles of CaCl2 did she throw?
50,500 moles
4.10 moles
0.244 moles
111 moles
A recipe calls for 12 g of baking soda, NaHCO3. How many moles of NaHCO3 go into the recipe?
0.058 moles
7.0 moles
0.14 moles
3.4 moles
At STP, 2.5 moles of helium gas will have what volume?
9 dm3
56 dm3
27 dm3
72 dm3
How many moles of methane gas molecules, CH4, are in 12 dm3 of ethane at Room temperature and pressure?
11.2 moles
0.5 moles
179.2 moles
27.2 moles
A 5.00 g sample of a compound consisting of calcium and chlorine contains 1.82 g of calcium and 3.23 g of chlorine. What is the empirical formula
CaCl2
Ca2Cl2
Ca2Cl4
Ca4Cl2
A 154 g sample of a compound contains 15.01 g of C and 62.03 g of Cl. What is the empirical formula for this compound.
CCl3
C4Cl
CCl4
CCl
