
Stoichiometry Mixed Practice
Quiz by Kylie Middleton
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- Q1
How many moles of O2 will be formed from 1.65 moles of KClO3?
2 KClO3 🡺 2 KCl + 3 O2
2.47 mol
8.42 mol
0.14 mol
2.48 mol
30s - Q2
How many moles of Fe2O3 are produced when 0.275 moles of Fe is reacted?
4 Fe + 3 O2 🡺 2 Fe2O3
0.14 mol
0.137 mol
0.2 mol
.63 mol
30s - Q3
How many grams of Fe2O3 are produced when 42.7 grams of Fe is reacted?
4 Fe + 3 O2 🡺 2 Fe2O3
61g
56g
976g
65g
30s - Q4
How many moles of O2 are produced when 1.26 moles of H2O is reacted?
2 H2O 🡺 2 H2 + O2
.65 mol
45 mol
1.26 mol
.63 mol
30s - Q5
How many moles of O2 will be formed from 3.76 grams of KClO3?
2 KClO3 🡺 2 KCl + 3 O2
.046 mol
3.76 mol
.005 mol
.05 mol
30s - Q6
If 2.9 grams of NO2 are made, how many moles of NO reacted?
2 NO + O2 🡺 2NO2
.06 mol
2.9 mol
46 g
.60 mol
30s - Q7
How many grams of O2 will be formed from 12.00 moles of KClO3 react?
2 KClO3 🡺 2 KCl + 3 O2
32 g
576g
12 mol
420 g
30s - Q8
What mass of iron is needed to react with 16.0 grams of Sulfur?
8 Fe + S8 → 8 FeS
16g
224g
28g
256g
30s - Q9
How many moles of FeS are produced from 36 grams of Iron?
8 Fe + S8 → 8 FeS
36 g
64 mol
.64 mol
.36 mol
30s - Q10
What mass of copper (II) sulfide would be formed if 18.5 moles of copper reacts?
8 Cu + S8 --> 8 CuS
1776g
18.5g
142g
17.76g
30s - Q11
What mass of water would be formed from the decomposition of 8.52 g of tin (IV) hydroxide?
Sn(OH)4 -->SnO2 + 2H2O
461g
1.64g
164g
16.4g
30s - Q12
If the burning of propane (C3H8) produces 15.0 moles of carbon dioxide, how many moles of oxygen were used?
C3H8 + 5O2 → 3CO2+ 4H2O
15 mol
250 mol
25 mol
2.5 mol
30s - Q13
What mass of Cd is produced if 85.0 g of Al2Se3 is produced?
3CdSe + 2Al --> Al2Se3 + 3Cd
291g
85g
98.14g
112 g
30s - Q14
How many moles of HF will be needed to react with 48 grams of Tin, Sn?
Sn + 2HF --> SnF2+ H2
48 mol
81.1 mol
96 mol
.81 mol
30s - Q15
What mass of H2SO4 would be required to react with 0.75 mol of NaOH?
H2SO4 + 2NaOH --> Na2SO4 + 2H2O
384g
36.75g
38g
32g
30s