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The percent by mass of oxygen in carbon dioxide () is 72.71%.
<u>Scientific data:</u>
- Molar mass of oxygen gas = 32 g/mol.
- Molar mass of carbon = 12 g/mol.
To calculate the percent by mass of oxygen in carbon dioxide ():
First of all, we would calculate the molar mass of carbon dioxide ();
For the percent by mass of oxygen:
Substituting the parameters into the formula, we have;
Percent mass of oxygen = 72.71%
Read more on percent mass here: brainly.com/question/15182450