Question

The half-life time for the first order decomposition of a substance dissolved in CCl4
in 2.5 hours at 30°C. The amount of the substance left after 10 hours, if the initial
2.
weight of substance is 160g, is
​

Answer 1

Answer:

10

Explanation:

80 after 2.5 hrs

40 after 5 hrs

20 after 7.5 hrs

10 after 10 hrs

Answer 2

Explanation:

4n mean 4lifes mean 1 is 2.5 2 is 5t