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Oksanka [162]
3 years ago
7

PLEASE HELP

Chemistry
1 answer:
LenaWriter [7]3 years ago
5 0

Hello!


I don't know a lot of this but after doing just a bit of research I think the answer is either A. or C. but I think it is A.


Hope it helps?

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What is the percent by mass of oxygen in carbon dioxide (CO2)?
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Answer:

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% of O2 = 32/44 × 100%

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