Answer:
16.5 days
Explanation:
Given that:
Half life = 26.5 days
Where, k is rate constant
So,
The rate constant, k = 0.02616 days⁻¹
Using integrated rate law for first order kinetics as:
Where,
is the concentration at time t
is the initial concentration
Given:
35.0 % is decomposed which means that 0.35 of
is decomposed. So,
= 1 - 0.35 = 0.65
t = 7.8 min
<u>t = 16.5 days.</u>
Relative molecular mass or RMM is the answer.
Answer:
A. Samuel
Explanation:
although he is not right he gets the same measurement several times
It should be 2.7 mol if I"m correct
Mass/ energy can not be created or destroyed