QUESTION 10 Given:
Cr2O3 (s) + 3CO(g) 2Cr (s) + 3C02 (9) AH = 290.7 kJ/mol
How many grams of CO must react to liberate 145 kJ of heat?
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O a. 14.0 g
O b. 28.0 g
O c. 41.9 g
d.56.2 g
O e. 1688

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

Chemistry worksheet - i am not sure what they are asking for exactly?

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.