Calculate the molar mass of caffeine, CgH10N402.

• 194.22 g
O 110.15 g
O 43.03 g
• 194 g

1 answer

To calculate the molar mass of caffeine, we need to determine the atomic masses of each element in the compound and sum them up.

The atomic masses are as follows:
- Carbon (C) = 12.01 g/mol
- Hydrogen (H) = 1.01 g/mol
- Nitrogen (N) = 14.01 g/mol
- Oxygen (O) = 16.00 g/mol

Now, we can calculate the molar mass of caffeine:
(1 * C) + (10 * H) + (1 * N) + (4 * O)
= (1 * 12.01 g/mol) + (10 * 1.01 g/mol) + (1 * 14.01 g/mol) + (4 * 16.00 g/mol)
= 12.01 g/mol + 10.10 g/mol + 14.01 g/mol + 64.00 g/mol
= 100.12 g/mol + 78.01 g/mol
= 178.13 g/mol

Therefore, the molar mass of caffeine is approximately 178 g/mol, which is closest to the option provided.