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Given t(1//2) =3 hr. Then how many gram ...

Given `t_(1//2) =3` hr. Then how many gram of a substance will remain after 18th hr from 300 gram of a substance

A

4.6 g

B

5.6 g

C

9.2 g

D

6.4 g

Text Solution

Verified by Experts

The correct Answer is:
A
Amount left after 18 hr `=((1)/(2))^((18)/(3))xx300`
`=((1)/(2))^(6)xx300=(300)/(2xx2xx2xx2xx2xx2)`
`=(300)/(64)=4.6 g`
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DINESH PUBLICATION-RATES OF REACTIONS AND CHEMICAL KINETICS-Revision Question
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