81.4 g sample of ethyl alcohol contains 0.002 g of water. The amount of pure ethyl alcohol to the proper number of significant figures is

Question: 81.4 g sample of ethyl alcohol contains 0.002 g of water. The amount of pure ethyl alcohol to the proper number of significant figures is

(a) 81.398 g

(b) 71.40 g

(c) 91.4 g

(d) 81 g

Correct Answer: (a) 81.398 g