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sashaice [31]
3 years ago
9

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

Chemistry
1 answer:
wariber [46]3 years ago
8 0

Answer:

= 72.73%

Explanation:

The percentage by mass of an element is given by;

% element = total mass of element in compounds/molar mass of compound × 100

The mass of oxygen in carbon dioxide = 32 g

Molar mass of CO2 = 44 g

Therefore;

% of O2 = 32/44 × 100%

             <u>= 72.73%</u>

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