A chemist measures the masses of CO and CO2, and finds the ratio 12:19. What is the ratio of the mass of the carbonate group, CO3, to the mass of CO? j A) 6:13 B) 13:6 C) 19:26 D 26:19
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The formula mass of a carbonate ion is (12 + 48) = 60
The molar mass of carbon dioxide is (12 + 32) = 44
60/44 = 15/11 = 1.36
The molar mass of carbon monoxide is (12 + 16) = 28
28/44 = 7/11 = 0.636
I don’t understand where the 12 and 19 came from but their ratio (0.63) is very close to the 0.636 ratio of Molar Mass of CO to Molar Mass of CO2
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