Converting 250mg Vitamin C to Atoms: 6.02e23

[Beeorz]

Homework Statement

You are given a 250mg tablet of Vitamin C, C6H8O6. How many atoms are in the Vitamin C sample?

The Attempt at a Solution

Formula Mass = 6(12.01)+8(1.01)+6(16.00) = 176.1 g/mol

250mg (1g/1000mg)(1mole/176.1g)(6.02e23molecules/1mole) = 8.546 molecules

How do I convert to atoms? I thought it was the same number but the webassign program said that it was incorrect.

 

[Borek]

First of all - it is not 8.5 molecule, you have missed the exponential part.

Second - take a look at the formula. C₆H₈O₆ - how many carbon atoms in molecule? Hydrogen? Oxygen? Total?