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Reptile [31]
3 years ago
11

Which of the following does NOT contain a covalent bond?

Chemistry
1 answer:
Cloud [144]3 years ago
8 0
I would say A. Calcium is not a metal, so does not covalently bond to Oxygen
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8.60 * 10^{23} atoms N2

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We want to convert grams to moles and then moles to atoms.

First, we convert grams of nitrogen gas (which is N2) to moles. To do so, we need the molar mass of N2, which is just 14.01 * 2 = 28.02 g.

40 g N2 * \frac{1 mol N2}{28.02 g N2} = 1.43 mol N2

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