CHEM CHEM 142
University of Washington
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WS6_Stoichiometry_Solution
- Exam (elaborations) • 4 pages • 2021
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Balance the following chemical reactions: 
a. 2 CaO(s) + 5 C(s) ® 2 CaC2(s) + 1 CO2(g) 
b. 4 NH3(g) + 5 O2(g) ® 4 NO(g) + 6 H2O(g) 
c. 1 C8H8(l) + 10 O2(g) ® 8 CO2(g) + 4 H2O(g) 
d. 1 NaHCO3(s) + 1 C2H4O2(aq) ® 1 NaC2H3O2(aq) + 1 CO2(g) + 1 H2O(l 
2. Write balanced chemical equations, including states-of-matter, for the following 
reactions: 
a. Dinitrogen pentoxide gas reacts with sodium metal to produce solid sodium 
nitrate and gaseous nitrogen dioxide. 
N2O5(g) + Na(s) ® NaNO3(s) + NO2(...
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