Answer:
(B) 73.0 hours.
Explanation:
- It is known that the decay of a radioactive isotope isotope obeys first order kinetics.
- Half-life time is the time needed for the reactants to be in its half concentration.
- If reactant has initial concentration [A₀], after half-life time its concentration will be ([A₀]/2).
- Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
<em>So, the half-life of 201Tl when its concentration is 0.0136 M is (B) 73.0 hours.</em>
Minerals determines the composition of a rock
Answer:
a)
b)
Explanation:
Hello,
a) In this case, for this kinetics problem, we can consider the temperature-dependent Arrhenius equation:
In such a way, for the given temperatures and rate constant, we compute the activation energy as follows:
b) In this case, we use the previously computed activation energy in order to compute the rate constant at the asked 17°C:
Best regards.
You cannot create something from nothing and similarly you cannot create less from more, if you didn't balance an equation that needs to be balanced, your product might end up equalling more or less than the total mass of the two elements combined. Which is impossible