Answer:
Step-by-step explanation:
To determine the number of grams in 3.9 moles of C3H5C13, we need to first determine the molar mass of C3H5C13. The molar mass of a substance is the mass of one mole of the substance, and it is calculated by adding up the atomic weights of all the atoms in the molecular formula.
In the case of C3H5C13, the molar mass is calculated as follows:
Molar mass of C3H5C13 = (3 x 12 g/mol) + (5 x 1 g/mol) + (13 x 35.5 g/mol) = 106.5 g/mol
Next, we need to multiply the molar mass by the number of moles to determine the number of grams:
3.9 moles x 106.5 g/mol = 421.05 g
Therefore, there are 421.05 grams in 3.9 moles of C3H5C13.