Answ????
Explanation:
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I think learn to drive is the most important part
The answer is D, because gems are usually not mettallic
The molar mass of monotonic Nitrogen is 14 g/mol. Since this is diatomic Nitrogen, double that to 28 g/mol.
Next, divide total mass by molar mass, 500 g / 28 g/mol, which gives <span>17.8571 moles. A mole is defined as being 6.022*10^23 molecules, so multiply moles by molecules/mol (Avogadro's number), and we finally end up with something like 1.075 * 10^25, give or take a few billion particles.</span>
I'm guessing water vapour. i can't think of any other gas limited to only hydrogen and oxygen
hope it helps :)
