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Svetradugi [14.3K]
1 year ago
14

How many moles are in 91.5 grams of Helium?

Chemistry
1 answer:
konstantin123 [22]1 year ago
4 0

In order to find the number of moles with a given mass of Helium, we need to use its molar mass, which is 4.0026g/mol, therefore we will have:

4.0026g = 1 mol of Helium

91.5g = x moles of Helium

x = 22.86 moles of Helium in 91.5 grams

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A sample of Mo(NO3)6 has 2.22 x 10^22 nitrogen atom, how many oxygen atoms does the sample have?
goldfiish [28.3K]

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Given that;

1 mole of Mo(NO3)6 contains 6.02 × 10^23 atoms of Nitrogen

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x = 1 mole × 2.22 x 10^22 atoms/6.02 × 10^23 atoms

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Learn more: brainly.com/question/9743981

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