Which of the following changes has a decrease in entropy? 2LiClO3 (s) yields 3O2 (g) + 2LiCl (s) N2O4 (g) yields 2NO2 (g) C6H6 (
2 answers:
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Answer:
the approximate pressure in the flask after 400. s = 1.2atm
Explanation:
The detailed explanation is shown below
Answer:
(a) 140 years
(b) 3.125 pounds
Explanation:
<u>QuestIons</u>
(a) How long is five half-life
(b) How much radioactive strontium is left after five half-life
Given that:
Half-life is about 28 years; &
There are 100 pounds of this radioactive waste
Five half-life will be;
= 28 × 5
= 140 years
The amount of radioactive remaining after five half-life is:
= 100 × 0.03125
= 3.125 pounds