Question

How many moles of atoms are in 9.00 g of 13c? express your answer numerically in moles?

Answer 1

Number of moles is defined as the ratio of given mass in grams to the molar mass of compound.

Number of moles =
`(Given mass in g)/(Molar mass)`

Now, put the value of given mass of
`^(13)C` in grams and molar mass of
`^(13)C` in g/mol i.e. 13 g/mol.

Thus,

number of moles =
`(9.00 g)/(13 g/mol)`

= 0.692 mol

Hence, number of moles of
`^(13)C` = 0.692 mol