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WorksheetsStoichiometry
Total questions: 10
Worksheet time: 3hrs 30mins
how many moles of potassium oxide (K2O) will be formed when 1.34 moles of potassium reacts with oxygen according to 4K+O2 --> 2K2O
0.67 moles K2O
6.7 moles K2O
67 moles K2O
0.34 moles K2O
How many moles of copper are needed to react with sulfur to produce 1.34 moles of copper (I) sulfide according to the following reaction 2Cu + S --> 2 K2O
26.8 moles Cu
2.68 moles Cu
268. moles Cu
4.67 moles Cu
How many moles of CO2 are produced from the combustion of 4.60 mol C3H8
1 C3H8 + 5O2 --> 2 CO2 + 4 H2O
13.8 mol CO2
1.38 mol CO2
138. mol CO2
18.3 mol CO2
How many moles of CS2 forms when 5.6 mol C reacts
5C + 2SO2 --> CS2 + 4CO
1.12 mol CS2
11.2 mol CS2
112. mol CS2
3.16 mol CS2
How many grams of iron (III) oxide are produced when 257.4 grams of FeS are used?
4FeS + 7O2 --> 2Fe2O3 + 4SO2
2.336 g iron (III) oxide
23.36 g iron (III) oxide
233.6 g iron (III) oxide
156.8 g iron (III) oxide
How many grams of NO is produced if 26.0g of O2 is combined with excess ammonia?
4NH3 + 5O2 --> 6H2O + 4NO
17.8g NO
195g NO
1.95g NO
19.5g NO
If 75.2g of Copper reacts with 39.8g of Silver Nitrate, according to the following reaction, what is the maximum number of grams of silver that can be produced?
1CU + 2Ag(NO3) --> 1CU(NO3)2 + 2 Ag
39.8 g Ag(NO3)
3.98 g Ag(NO3)
398 g Ag(NO3)
45.7 g Ag(NO3)
if 145.0g of NH4Cl reacts with 68g of Ca(OH)2 according to the following reaction, what is the maximum mass of ammonia that can be formed?
2NH4Cl + Ca(OH)2 --> CaCl2 + 2NH3 + 2H2O
311.8g of ammonia
31.18g of ammonia
3118g of ammonia
28.61g of ammonia
if 75.0g of magnesium is reacted with an excess of nitric acid, then 2.9g of hydrogen is actually produced, what is the percent yield of hydrogen
1Mg + 2 HNO3 --> 1Mg(NO3)2 + 1H2
43.0%
4.70%
47.0%
23.0%
if 17.0g aluminum was reacted with an excess of bromine to yield 100. aluminum bromide find the theoretical yield then calculate the percent yield
2Al(s) + 3Br2(L) --> AlBr3(s)
535%
47.9%
53.5%
59.5%
