MCQ
$81.4\, g$ sample of ethyl alcohol contains $0.002\, g$ of water. The amount of pure ethyl alcohol to the proper number of significant figures is
- ✓$81.4\, g$
- B$71.40 \,g$
- C$81.398 \,g$
- D$81 \,g$
✓
Answer
Correct option: A.
$81.4\, g$
a
(a) Pure ethyl alcohol $ = 81.4 - 0.002 = 81.398$.
(a) Pure ethyl alcohol $ = 81.4 - 0.002 = 81.398$.
according to significant number it is $= 81.4$.
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