Question

Calculate the number of moles in 3.20 g of each of the following:
C6H8O6, vitamin C
Express your answer in moles

Answer 1

To calculate the number of moles, we need to use the formula:

Number of moles = Mass (g) / Molar mass (g/mol)

1. C6H8O6 (Vitamin C):
The molar mass of C6H8O6 can be calculated by multiplying the atomic masses of each individual element by the number of atoms present in the formula and summing them up.

Molar mass of C = 12.01 g/mol (1 Carbon atom)
Molar mass of H = 1.01 g/mol (8 Hydrogen atoms)
Molar mass of O = 16.00 g/mol (6 Oxygen atoms)

Molar mass of C6H8O6 = (6 * 12.01) + (8 * 1.01) + (6 * 16.00) = 72.06 + 8.08 + 96.00 = 176.14 g/mol

Now, we can calculate the number of moles:

Number of moles = 3.20 g / 176.14 g/mol ≈ 0.0182 moles

Therefore, the number of moles in 3.20 g of Vitamin C is approximately 0.0182 moles.

Note: It is essential to round the final answer to the appropriate number of significant figures, depending on the given data.