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WorksheetsMole Calculations Practice
Total questions: 10
Worksheet time: 50mins
How many grams are in 7.8 moles of NaCl?
476 grams
456 grams
452 grams
462 grams
N2 + 3H2 → 2NH3
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
1
2
3
6
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 percent composition of C in C4H10?
48.0%
58.0%
17.2%
82.8%
4NH3(g) + 6NO(g) --> 5N2(g) + 6H2O(g)
How many moles of ammonia are needed to form 0.65 moles of nitrogen with excess quantities of nitrogen monoxide?
0.65 moles of NH3
4.0 moles of NH3
2.6 moles of NH3
0.52 moles of NH3
2Na(s) + Cl2(g) --> 2NaCl(s)
3.0 moles of chlorine are reacted with 3.0 sodium, what was the theoretical yield (how much NaCl should have been produced)?
6.0 mol NaCl
3.0 mol NaCl
9.0 mol NaCl
1.5 mol NaCl
If the theoretical yield is 18 moles and the actual yield is 14 moles, what is the percent yield?
128.6%
32.0%
77.8%
92.4%
What percentage of the total atomic mass of carbon monoxide (CO) is composed of oxygen?
29%
43%
57%
73%
What percentage of the total atomic mass of lithium phosphide (Li3P) is composed of phosphorus?
13%
29%
40%
60%
