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?

mHe =

Part M

What is the molecular mass of atomic nitrogen?

mN =

Part N

What is the molecular mass of molecular nitrogen?

mN2 =

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

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

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