How do you determine the molar mass of heptane?

To determine the molar mass of a compound like heptane (C7H16), you need to calculate the sum of the atomic masses of all the atoms in one mole of heptane. Here's how you can do it:

Find the atomic masses of the elements in heptane:

Carbon (C) has an atomic mass of approximately 12.01 g/mol.
Hydrogen (H) has an atomic mass of approximately 1.01 g/mol.
Count the number of each type of atom in one molecule of heptane (C7H16):

There are 7 carbon atoms (C).
There are 16 hydrogen atoms (H).
Calculate the molar mass:

Molar mass of heptane = (7 x atomic mass of carbon) + (16 x atomic mass of hydrogen)
Molar mass of heptane = (7 x 12.01 g/mol) + (16 x 1.01 g/mol)
Now, calculate the molar mass:

Molar mass of heptane ≈ (84.07 g/mol) + (16.16 g/mol)

Molar mass of heptane ≈ 100.23 g/mol

So, the molar mass of heptane (C7H16) is approximately 100.23 grams per mole.