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4. Carotene, the pigment responsible for the color of carrots, has a percent composition of 89.49%--C and 10.51%--H. Its molecular mass was found to be 546.9g. Calculate its empirical formula and its molecular formula.

Chemistry
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Assuming 100% composition you would take 0.8949g of carbon and 0.1051 g of hydrogen. You then take the molecular mass given to find moles.
ok so Carbon has .0745 mol and hydrogen has .1043 mol. now what do i do?
so would the units be g/mol?

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Other answers:

Divide the mol given by 0.745 for both.
0.0745*
so not by the molecular mass?
No. That's for molecular formula. Sorry.
like information to osrt of "check"
okay so i got 1 for carbon and 1.4 for hydrogen
ok, round to the closest whole number ratio and that's your empirical formula
okay so what about the molecular formula? and so the empirical formula would be just 1 and 1?
Find the total mass of your empirical formula and divide that total by your molecular mass found out.
You should have: \[\frac{ 546.9g }{ 13.018g }\]
how did you get 13.018?
Well, your empirial formula give is CH. The total mass of C + H = 13.018 g/ mol
okay so the answer to 546.9g/13.018g is 42.01.
Yep, now multiply that number by your empirical formula to get your molecular formula.
so multiply 42.01 with 1 or 2?
42(empirical formula)
what is the empirical formula though? 1 or 2?
1!
so its just 42.01..
Use whole numbers. So 42.
so thats it?

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