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calculate the percent composition, by mass, of carbon in Na2CO3. please explain how you get the answer.
14 years ago

Answers

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.
14 years ago
denise
i got 45.8.
14 years ago
DrBob222
Are you implying that (12/106)*100 = 45.8%. No way. How do you get 45.8?
14 years ago

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