A particular oral contraceptive contains 0.041 mg of ethinyl estradiol in each pill. The formula of this compound is C20H24O2. How many moles of ethinyl estradiol are there in one pill?

Question

I need help in approaching this

Answer 1

(1) Convert 0.041 milligrams to grams (divide by 1000)
(2) Find the formula mass of C20H24O2 to get the grams per mole.
(3) Divide the answer to step #1 by the grams/mole

Answer 2

The other two parts are:
1) How many carbon atoms are there in one of these pills (due to the presence of ethinyl estradiol)?

2What mass of carbon is this? (Enter the answer in grams.)

Answer 3

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