Asked by denise
calculate the percent composition, by mass, of carbon in Na2CO3. please explain how you get the answer.
Answers
Answered by
DrBob222
%C = (mass C/total mass)*100 = ??
Just like any percent problem, it's the mass of the part you want over the total mass.
mass C = about 12
mass Na2CO3 = about 106 or so.
Where did those numbers come from? From the periodic table.
Just like any percent problem, it's the mass of the part you want over the total mass.
mass C = about 12
mass Na2CO3 = about 106 or so.
Where did those numbers come from? From the periodic table.
Answered by
denise
i got 45.8.
Answered by
DrBob222
Are you implying that (12/106)*100 = 45.8%. No way. How do you get 45.8?
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