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81.4 g sample of enthyl ethyl alcohol co...

`81.4 g` sample of enthyl 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

81.40g

C

81.4g

D

81g

Text Solution

Verified by Experts

The correct Answer is:
C
wt of pure `C_(2)H_(5)OH` = wt of solution - wt of water
`=81.4-0.002=81.398`
by a rounding of the answer is 81.4 (with one decimal point)
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