In #0.39*mol# #CO_2(g)#, how many moles of carbon are present?

1 Answer
Oct 4, 2016

Answer:

#0.39# #"moles C"#

Explanation:

In every #"Avogadro's number, "N_A# of carbon dioxide, there are #N_A# carbon atoms, and #2xxN_A# oxygen atoms. And #N_A# carbon dioxide molecules have a mass of approx. #44*g#.

What is (i), the mass of the carbon in such a molar quantity; and (ii), the mass of the carbon dioxide in such a molar quantity?

If I asked, #"how many oxygen atoms in a dozen"# #CO_2# #"molecules?"#, would you be able to answer confidently? Because this is what the question in effect asks.