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There are 6.023x10^23 molecules in one mole of a compound. So now, you have to find how many moles of each compound you have.

CO's molecular weight is (12+16) = 28 g/mol

N2's molecular weight is (14+14) = 28 g/mol

So you find the moles of each.

moles of N2 = 20g/ 28g/mol = .714 moles

moles of CO = 16g / 28 g/mol = .571 moles

So, N2 has (.714 *6.023x10^23) has 4.3 x10^23 molecules and CO (.571 *6.023x10^23) has 3.4x10^23 molecules.

So, 20g of N2 has more molecules than 16g of CO

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14y ago
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5mo ago

20g of N2 has more molecules because nitrogen (N2) has a smaller molar mass (28.02 g/mol) compared to carbon monoxide (CO) which has a molar mass of 28.01 g/mol. This means that 20g of N2 contains more moles and, therefore, more molecules.

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Q: Which has more molecules 16g of CO or 20g of N2?
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