Question

What is the molecular mass of atomic helium? Express your answer with the appropriate units. mHe...

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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Homework Answers

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

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