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kifflom [539]
2 years ago
15

How many moles are in a mass of 800.0 g of magnesium?

Chemistry
1 answer:
qaws [65]2 years ago
7 0

Answer:

32.92 moles of Mg

Explanation:

To convert grams to moles (Or vice versa) of any chemical compound we need to use the molar mass of the substance (That is, how many grams weighs 1 mole of the chemical).

The magnesium, Mg, has a molar mass of 24.305g/mol. That means in 800.0g of Mg you have:

800.0g * (1mol / 24.305g) =

<h3>32.92 moles of Mg</h3>
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PV = nRT   (where P = pressure; V = volume; n = number of moles; R = gas constant; T = Temperature)

Moles of H₂ = mass of H₂ ÷ molar mass of H₂
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To get the answer in atmospheres, let's convert C to K 
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Now, based on the formula above
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