Chemistry Practice Problems Mole Fraction Practice Problems Solution: The molecular formula of Vitamin E (tocopherol) is...

Solution: The molecular formula of Vitamin E (tocopherol) is C29H50O2 (MW = 430.71). If the mole fraction of vitamin E in a methyl alcohol (CH3OH) solution is 0.002, what is the molality of the Vitamin E solution?a) none of the other answers is even close (within 10% error )b) 0.00273c) 0.00503d) 0.0625e) 0.1570

Problem

The molecular formula of Vitamin E (tocopherol) is C29H50O2 (MW = 430.71). If the mole fraction of vitamin E in a methyl alcohol (CH3OH) solution is 0.002, what is the molality of the Vitamin E solution?

a) none of the other answers is even close (within 10% error )

b) 0.00273

c) 0.00503

d) 0.0625

e) 0.1570