1.60 x 10^24 molecules
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The answer is 5,213.10 ex.23.
Molecules of NO2 contain covalent bonds
The molar mass of nitrogen dioxide (NO2) is approximately 46 grams per mole.
Assuming you mean 138.08 grams, you set up a direct proportion between the molar mass of NO2 and your given mass. NO2 comes in at 46g/mol (14+16+16), and your proportion should be 46/1=138.08/x. Solve for x to get approx. 3 moles.
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