Question

What is the molecular mass of atomic helium?

Express your answer with the appropriate units.

mHe =

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Part M

What is the molecular mass of atomic nitrogen?

Express your answer with the appropriate units.

mN =

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Part N

What is the molecular mass of molecular nitrogen?

Express your answer with the appropriate units.

mN2 =

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Answer 1

L)

molar mass of He = 4.003 g/mol

This is mass of 6.022*10^23 atoms

we have below equation to be used:

mass of 1 atom = molar mass /(6.022*10^23)

mass of 1 atom = 4.003/(6.022*10^23)

mass of 1 atom = 6.647*10^-24 g

Answer: 6.65*10^-24 g

M)

molar mass of N = 14.01 g/mol

This is mass of 6.022*10^23 atoms

we have below equation to be used:

mass of 1 atom = molar mass /(6.022*10^23)

mass of 1 atom = 14.01/(6.022*10^23)

mass of 1 atom = 2.326*10^-23 g

Answer: 2.33*10^-23 g

N)

Molar mass of N2 = 28.02 g/mol

molar mass of N2 = 28.02 g/mol

This is mass of 6.022*10^23 molecules

we have below equation to be used:

mass of 1 molecule = molar mass /(6.022*10^23)

mass of 1 molecule = 28.02/(6.022*10^23)

mass of 1 molecule = 4.65*10^-23 g

Answer: 4.65*10^-23 g