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WorksheetsStoich: mole gram and mole mole
Total questions: 30
Worksheet time: 4hrs 6mins
Given the equation:
2NaClO3 (s) → 2NaCl (s) + 3O2 (g)
When 2.00 moles of NaClO3 react, how many grams of O2 is produced?
56 g of O2
96 g of O2
64 g O2
32 g O2
2 NaClO3 (s) → 2NaCl (s) +3 O2 (g)
How many grams of O2 will be produced from 12.00 moles of NaClO3?
256 g of O2
576 g of O2
288 g O2
32 g O2
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
13.7 mol
2.75 mol
6.11 mol
6.85 mol
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many grams of Fe are produced from 2.0 moles of Fe2O3?
223.6 g
111.8 g
55.9 g
167.7 g
(K ONLY---3 step problem)
CH4 + 2 O2 → CO2 + 2 H2O
What mass (g) of water is produced when 16 g of CH4 is completely combusted?
32 g
36 g
18 g
72 g
2 NaClO3 (s) → 2NaCl (s) + 3 O2 (g)
How many moles of O2 are produced when 8.00 moles of NaClO3 decompose?
4.0 mol
6.0 mol
12.0 mol
8.0 mol
(K Only)
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
If 80.0 g of Fe2O3 is used, what mass of H2O (in grams) will be produced?
27 g
48.6 g
24.3 g
72.0 g
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane (C2H6) combusts in the above reaction. What is the mole ratio of ethane to oxygen gas?
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane (C2H6) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?
4 NH3 + 5 O2 → 4 NO + 6 H2O
What is the mole ratio of water to oxygen? (a)
What is the mole ratio of NH3 to NO? (b)
What is the mole ratio of NH3 to oxygen? (c)
What is the mole ratio of H2O to NH3? (d)
4 FeS + 7 O2 → 2 Fe2O3 + 4 SO2
How many moles of O2 will you need to react with 17.3 moles of FeS?
30.28 moles
9.89 moles
0.40 moles
39.33 moles
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
If 6.0 moles of H2 react, what mass of H2O (in grams) will be produced?
54 g
108 g
36 g
72 g
How many moles of Fe2O3 are required to produce 75.8 grams of Fe?
1.35 moles
1.51 moles
2.27 moles
0.68 moles
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
6 mol H
2 mol H
3 mol H
1 mol H
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
What is a Excess reactant?
Where are the numbers for a mole ratio found?
They are part of the chemical formulas for the reactants / products.
They are given in the problem.
They are found on the periodic table for those elements.
They are found as coefficients in the reaction's balanced chemical equation.
When the equation is balanced, the coefficient for KNO2 is:
KNO3 (aq) → KNO2 (aq) + O2 (g)
2
1
3
4
Using the following equation:
4 NH3 + 5 O2 -----------> 4 NO + 6 H2O
How many moles of oxygen (O2) are needed to react with 56.8 grams of ammonia by this reaction?
4.17 moles O2
41.7 moles O2
40.17 moles O2
0.417 moles O2
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
A problem asks how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6). What is the final answer for this problem?
13 mol C2H6
3 mol O2
21 mol O2
42 mol O2
What is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?
Determine the number of moles of AlNO3 that are in 264 g of the compound.
2.97 mol
3.45 mol
2.73 mol
1.86 mol
Determine the amount of moles in CuBr that are in 276.9 g of the compound.
3.2 mol
1.7 mol
2.1 mol
1.9 mol
When reacting Na with Cl2, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?
90.4%
104%
96.15%
1.04%
2 NaClO3 (s) → 2NaCl (s) +3 O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
64 g of O2
576 g of O2
288 g O2
0.563 g O2
