Question

1. How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s) ? 2 K2O(s) + 2 N2(g) + 5 O2(g) a. 0.290 mol O2 b. 0.580 mol O2 c. 18.5 mol O2 d. 0.724 mol O2 e. 1.73 mol O2 2. A 14.01 g sample of N2 reacts with 3.02 g of H2 to form ammonia (NH3). If ammonia is the only product, what mass of ammonia is formed? a. 17.01 g b. 1.10 g c. 14.01 g d. 3.02 g e. 23.07 g 3. Consider the following balanced reaction. What mass (in g) of CO2 can be formed from 288 mg of O2? Assume that there is excess C3H7SH present. C3H7SH(l) + 6 O2(g) ? 3 CO2(g) + SO2(g) + 4 H2O(g) a. 0.396 g CO2 b. 0.209 g CO2 c. 0.792 g CO2 d. 0.126 g CO2 e. 0.198 g CO2 4. How many molecules of H2S are required to form 79.0 g of sulfur according to the following reaction? Assume excess SO2. 2 H2S(g) + SO2(g) ? 3 S(s) + 2 H2O(l) a. 1.48 !! 10^24 molecules H2S b. 9.89 !! 10^23 molecules H2S c. 5.06 !! 10^25 molecules H2S d. 3.17 !! 10^25 molecules H2S e. 2.44 !! 10^23 molecules H2S

          1. How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol.

4 KNO3(s) ? 2 K2O(s) + 2 N2(g) + 5 O2(g)
a. 0.290 mol O2
b. 0.580 mol O2
c. 18.5 mol O2
d. 0.724 mol O2
e. 1.73 mol O2

2. A 14.01 g sample of N2 reacts with 3.02 g of H2 to form ammonia (NH3). If ammonia is the only product, what mass of ammonia is formed?
a. 17.01 g
b. 1.10 g
c. 14.01 g
d. 3.02 g
e. 23.07 g

3. Consider the following balanced reaction. What mass (in g) of CO2 can be formed from 288 mg of O2? Assume that there is excess C3H7SH present.

C3H7SH(l) + 6 O2(g) ? 3 CO2(g) + SO2(g) + 4 H2O(g)
a. 0.396 g CO2
b. 0.209 g CO2
c. 0.792 g CO2
d. 0.126 g CO2
e. 0.198 g CO2

4. How many molecules of H2S are required to form 79.0 g of sulfur according to the following reaction? Assume excess SO2.

2 H2S(g) + SO2(g) ? 3 S(s) + 2 H2O(l)
a. 1.48 !! 10^24 molecules H2S
b. 9.89 !! 10^23 molecules H2S
c. 5.06 !! 10^25 molecules H2S
d. 3.17 !! 10^25 molecules H2S
e. 2.44 !! 10^23 molecules H2S

1. How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol.

4 KNO3(s) ? 2 K2O(s) + 2 N2(g) + 5 O2(g)
a. 0.290 mol O2
b. 0.580 mol O2
c. 18.5 mol O2
d. 0.724 mol O2
e. 1.73 mol O2

2. A 14.01 g sample of N2 reacts with 3.02 g of H2 to form ammonia (NH3). If ammonia is the only product, what mass of ammonia is formed?
a. 17.01 g
b. 1.10 g
c. 14.01 g
d. 3.02 g
e. 23.07 g

3. Consider the following balanced reaction. What mass (in g) of CO2 can be formed from 288 mg of O2? Assume that there is excess C3H7SH present.

C3H7SH(l) + 6 O2(g) ? 3 CO2(g) + SO2(g) + 4 H2O(g)
a. 0.396 g CO2
b. 0.209 g CO2
c. 0.792 g CO2
d. 0.126 g CO2
e. 0.198 g CO2

4. How many molecules of H2S are required to form 79.0 g of sulfur according to the following reaction? Assume excess SO2.

2 H2S(g) + SO2(g) ? 3 S(s) + 2 H2O(l)
a. 1.48 !! 10^24 molecules H2S
b. 9.89 !! 10^23 molecules H2S
c. 5.06 !! 10^25 molecules H2S
d. 3.17 !! 10^25 molecules H2S
e. 2.44 !! 10^23 molecules H2S

Added by Patrick H.

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