The molar mass of carbon (C) is 12.01 g/mol. This means that 1 mole of carbon has a mass of 12.01 grams.

To find the mass of 3.7 mol of carbon, we can use the following formula:

mass = number of moles × molar mass

mass = 3.7 mol × 12.01 g/mol

mass = 44.437 grams

Therefore, the mass of 3.7 mol of carbon is 44.437 grams.