Question

[Chemistry] If you have 1 mol of CH4,

a) 1 mol CH4 = 1 mol C
b) 1 mol CH4 = 4 mol H
c) 1 mol CH4 = 1 mol C + 4 mol H

Which statement(s) from above is true and why? ;\

Answer 1

C is correct. In a very basic nutshell a mole is equal to the atomic weight of an element in grams. So the atomic weight of Carbon is 12.01 amu. So that being said, 1 mole of carbon is equal to 12.01g.

So if you have 1 mole, of CH4 that means you have 1 mole of Carbon and 4 moles of Hydrogen.

Answer 2

C is the correct answer. If you think of 1 mol as being one unit of each of the molecules and atoms, then 1 C and 4 H can come together to make 1 molecule of CH4, which is one unit and so would be 1 mol

As a little side note, H generally exists as H2 and so really you'd need:
\[C + 2H{2} \rightarrow CH{4}\]
However thats not required in this question.