How man molecules of ethanol are in 3.44 fluid onuces of the liquid? The density of ethyl alcohol is 0.789 g/ml (1 fl.oz. = 29.57)

Question

Need help i have been trying this question for hours but i can not get it right

Answer 1

(3.44 fl oz)(29.57 ml/fl oz) = 3.44(29.57) = 101.7208 ml

 

(101.7208 ml)(0.789 g/ml) = 80.2577112 g

 

We have 80.2577112 grams of ethanol. 

Ethanol is 46.08 g/mole

 

(80.257712 g)/(46.08 g/mole) = 1.7417 moles of ethanol

A mole of anything is 6.022 x 10²³ of that substance

 

1.7417(6.022 x 10²³) = 1.04885174 x 10²⁴ molecules of ethanol