Final answer:
To find the number of moles in 750 grams of methanol, divide the mass by the molar mass of methanol, resulting in approximately 23.4 moles of methanol.
Step-by-step explanation:
To calculate the number of moles of methanol (CH3OH), you first need the molar mass of methanol.
Methanol has a molar mass of approximately 32.04 g/mol (12.01 for carbon, 4x1.01 for hydrogen, and 16.00 for oxygen).
Using the formula:
Number of moles = mass (g) ÷ molar mass (g/mol)
We substitute the given values:
Number of moles = 750 g ÷ 32.04 g/mol
The result is approximately:
Number of moles = 23.4 mol of CH3OH