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17. Balance the following equation: CoS + CO + Cu ® Co2 (CO) 8 + Cu2S Answer:
22. Express the result of the operation, (8.317 x 2.7 X 3.159)/4.19, to the proper number of significant digits. Answer: 23.
12. The percent composition by mass of a compound is 76.08 C, 12.88 H, and 11.2% 0. The molar mass of this compound is found
13. When the equation is balanced, PC13(1) + H20(1) HCl(aq), the coefficient of H20 is H3PO3(aq) + Answer:
14. Given the chemical equation, 2A513 2 As + 312, how many grams of 12 are produced in the reaction, if 3.200 g As are obtai
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