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____ 56. When heated lead nitrate decomposes according to the following equation. What is the coefficient for NO2<br />
when the this equation is balanced with the smallest whole number coefficients?<br />
Pb(NO3)2 PbO + O2 + NO2<br />
a. 1<br />
b. 2<br />
c. 3<br />
d. 4<br />
e. 5<br />
____ 57. One of the reactions that take place inside a blast furnace to produce iron is the reduction of iron ore by<br />
carbon monoxide. Choose the answer that represents the sum of all the coefficients when this equation is<br />
balanced the smallest whole number coefficients.<br />
Fe2O3 + CO CO2 + Fe<br />
a. 5<br />
b. 9<br />
c. 4<br />
d. 7<br />
e. 6<br />
____ 58. How many moles of O2 are required to react with 23.5 moles of methanol?<br />
2CH3OH + 3O2 2CO2 + 4H2O<br />
a. 47.0<br />
b. 35.3<br />
c. 11.8<br />
d. 40<br />
e. 23.5<br />
____ 59. Propane (C3H8) burns in oxygen to form CO2 and H2O according to the following equation. How many grams<br />
of O2 are required to burn 3.01 10 23 propane molecules?<br />
C3H8 + 5O2 3CO2 + 4H2O<br />
a. 80.0 g<br />
b. 40.0 g<br />
c. 160 g<br />
d. 16.0 g<br />
e. 64.0 g<br />
____ 60. Acrylonitrile, C3H3N, is a molecule used to produce a plastic called Orlon. How many grams of acrylonitrile<br />
could be produced by reacting 583 g of propene, C3H6 with excess ammonia, NH3 and oxygen?<br />
2C3H6 + 2NH3 + 3O2<br />
a. 368 g<br />
b. 1470 g<br />
C3H3N + 6H2O
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