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WorksheetsStoichiometry Test Review
Total questions: 14
Worksheet time: 22mins
CH4( g) + 2 O2( g) → CO2( g) + 2 H2O( g)
How many moles of oxygen are needed for the complete combustion of 12.0 moles of CH4(g)?
24mol O2
6mol O2
4mol O2
12mol O2
N2 + 3 H2 → 2 NH3
How many grams of ammonia are produced when 10.0 mole of nitrogen reacts?
340g NH3
85g NH3
170g NH3
10mol NH3
N2( g) + 3 H2( g) → 2 NH3( g)
What is the total number of moles of NH3( g) produced when 6 moles of H2 (g) reacts completely with N2( g)?
4 mol NH3
9 mol NH3
12 mol NH3
6 mol NH3
2 H2 + O2 → 2 H2O
What is the total mass of water formed when 6 grams of hydrogen reacts completely with 64 grams of oxygen?
54g H2O
72g H2O
108g H2O
216g H2O
In this reaction,
Fe2O3 + 3 CO → 2 Fe + 3 CO2,
what is the total number of moles of CO used to produce 28 grams of iron?
0.75 mol CO
1.5 mol CO
0.35 mol CO
0.5mol CO
2 C2H2( g) + 5 O2( g) → 4 CO2( g) + 2 H2O( g)
What is the total number of grams of O2( g) needed to react completely with 4.0 mole of C2H2( g)?
320g O2
160g O2
25.6g O2
12.8g O2
Remy added concentrated HCl solution in excess to 48.6 grams of magnesium metal and collected the hydrogen gas that was produced by the reaction.
Mg( s) + 2 HCl( aq) → MgCl2 aq) + H2( g)
If Justin collected 1.5 grams of H2, what was the percent yield of H2?
0.375 %
37.5%
75%
18.75%
Fe2O3 + 2 Al → 2 Fe + Al2O3 ,
What mass of Iron (III) Oxide must be used to produce 7 grams of Iron?
10g Fe2O3
40g Fe2O3
7g Fe2O3
160g Fe2O3
Fe(s) + CuSO4( aq) → FeSO4( aq) + Cu( s)
What total mass of iron is necessary to produce 10.00 mole of copper?
560g Fe
56 g Fe
635.5g Fe
63.6g Fe
2H2 + O2 --> 2H2O
What is the mole ratio of O2 consumed to water produced?
1:2
2:1
2:2
C3H8( g) + 5 O2( g) → 4 H2O( g) + 3 CO2( g)
The volumes of the reactants and products of this reaction are measured under the same conditions. What is the total number of liters of CO2 produced when 89.6 liters of O2 reacts completely with C3H8?
17.92L C3H8
448L C3H8
12.54 L C3H8
24.64L C3H8
In a particular reaction between copper metal and silver nitrate, 15.89g Cu produced 35.96g Ag. What is the percent yield of silver in this reaction?
Cu + 2AgNO 3 → Cu(NO 3) 2 + 2Ag
66.6%
37.5%
33.3%
75%
K 3PO 4( aq) + 3 AgNO 3( aq) → Ag3PO 4( s) + 3 KNO 3( aq)
In the laboratory, Melinda mixed together solutions of 35.3g of K3PO 4 and 37.7g of AgNO3. She is interested in making the product Ag3PO 4. What is the limiting reactant, and how much Ag 3PO 4 will be produced?
K3PO 4 is the limiting reactant, 93 grams of Ag 3PO 4 were formed.
K3PO 4 is the limiting reactant, 31 grams of Ag 3PO 4 were formed.
AgNO3 is the limiting reactant, 93 grams of Ag 3PO 4 were formed.
AgNO3 is the limiting reactant, 31 grams of Ag 3PO 4 were formed.
Hydrochloric acid (HCl) breaks down into hydrogen gas and chlorine gas according to the reaction:
2 HCl → Cl 2 + H 2
If 18.22 grams of HCl reacts, what is the theoretical yield of hydrogen gas produced?
5g H2
0.5g H2
2g H2
