WorksheetsUnit 8 exam review
Total questions: 15
Worksheet time: 3hrs 30mins
What is the mole ratio of NaNO3 to Na2O?
10 mol Na / 2 mol NaNO3
2 mol NaNO3 / 6 mol Na2O
6 mol Na2O / 2 mol NaNO3
10 mol Na2O / 1 mol NaNO3
What is the mole ratio of P4O6 to H3PO3?
6 H2O / 4 mol P4O6
6 H2O / 1 mol P4O6 / 4 mol H3PO3
4 mol P4O6 / 1 mol H3PO3
1 mol P4O6 / 4 mol H3PO3
What is the mole ratio of Cl2 to HCl in the following chemical equation?
1 mole Cl2 / 2 mol HCl
1 mole Cl2 / 1 mol H2
2 mol HCl /1 mole Cl2
2 mole Cl2 / 1 mol HCl
What is the mole ratio of HCl to Cl2 in the following chemical equation?
1 mole Cl2 / 2 mol HCl
1 mole Cl2 / 1 mol H2
2 mol HCl /1 mole Cl2
2 mole Cl2 / 1 mol HCl
How many moles of Cl2 would it take to make 3.56 mol NaCl? (round to 3 significant figures)
1.78 mol Cl2
7.12 mol Cl2
208 mol Cl2
0.0609 mol Cl2
How many moles of O2 would it take to make 5.43 mol N2O5? (round to 3 significant figures)
27.2 mol O2
13.6 mol O2
2.17 mol O2
7.54 mol O2
How many moles of H3PO3 can 6.74 mol P4O6 make? (round to 4 significant figures)
26.96 mol H3PO3
6.740 mol H3PO3
12.87 mol H3PO3
1.685 mol H3PO3
How many moles of Ba(OH)2 can 12.95 mol H2O make? (round to 4 significant figures)
12.95 mol Ba(OH)2
6.475 mol Ba(OH)2
25.90 mol Ba(OH)2
3.467 mol Ba(OH)2
How many grams of S8 can react with 25.7 g of Al ? (round to 4 significant figures)
651.6 g S8
91.63 g S8
103.97 g S8
45.82 g S8
How many grams of MnO2 are needed to yield 15.6 g of K2MnO4? (round to 4 significant figures)
6.88 g MnO4
13.76 g MnO4
3.440 g MnO4
1.374 g MnO4
Calculate the THEORETICAL yield of Fe2O3 if 12.39 grams of O₂ reacts with excess Fe. (round to 4 significant figures)
41.22 g Fe2O3
65.87 g Fe2O3
92.75 g Fe2O3
82.44 g Fe2O3
Calculate the THEORETICAL yield of Al2S3 , if 26.8 grams of S8 reacts with excess Al. (round to 4 significant figures)
41.83 g Al2S3
5.883 g Al2S3
101.8 g Al2S3
74.39 g Al2S3
21.8 g of Al reacts with excess S8. A scientist recovers 50.36 g of g Al2S3. Calculate the PERCENT yield. (round to 4 significant figures)
83.02%
99.34%
75.45%
92.46%
35.0g Mg reacts with 55.0g Br₂ to form MgBr₂. Which is the limiting reagent?
MgBr₂
Br2
Mg
40.0g of N₂ reacts with 10.0g of H₂ to form NH₃. Which is the limiting reagent?
H2
N2
NH3
