(n) = number of moles,
(m) = mass of substance,
(M) = molar mass (equivalent to atomic weight on the periodic table)
2.75 moles (n) has been provided for you
The next step is to find out the molar mass (M) of carbon dioxide before proceeding to find the mass of substance (m).
To be able to find the molar mass, you have to know what are the elements present in carbon dioxide.
Since the formula of carbon dioxide is
The molar mass of carbon is 12.0 g/mol and oxygen is 16.0 g/mol.
Since there are two oxygens present, you have to times 16.0 by 2 and it becomes 32.0 g/mol.
The molar mass (M) of
Since you've found the molar mass (M) and number of moles (n), you can now find the mass (m).
Looking back at the
The mass of
Therefore, the mass of 2.75 moles of