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 one year ago
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.
 one year ago
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.

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abb0t
 one year ago
Best ResponseYou've already chosen the best response.0Assuming 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.

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0ok so Carbon has .0745 mol and hydrogen has .1043 mol. now what do i do?

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0so would the units be g/mol?

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0Divide the mol given by 0.745 for both.

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0so not by the molecular mass?

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0No. That's for molecular formula. Sorry.

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0like information to osrt of "check"

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0okay so i got 1 for carbon and 1.4 for hydrogen

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0ok, round to the closest whole number ratio and that's your empirical formula

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0okay so what about the molecular formula? and so the empirical formula would be just 1 and 1?

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0Find the total mass of your empirical formula and divide that total by your molecular mass found out.

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0You should have: \[\frac{ 546.9g }{ 13.018g }\]

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0how did you get 13.018?

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0Well, your empirial formula give is CH. The total mass of C + H = 13.018 g/ mol

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0okay so the answer to 546.9g/13.018g is 42.01.

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0Yep, now multiply that number by your empirical formula to get your molecular formula.

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0so multiply 42.01 with 1 or 2?

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0what is the empirical formula though? 1 or 2?

Tttaammmaannnaa
 one year ago
Best ResponseYou've already chosen the best response.0so its just 42.01..

abb0t
 one year ago
Best ResponseYou've already chosen the best response.0Use whole numbers. So 42.
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