Protium - the most common isotope of hydrogen - has no neutrons in its nucleus.
Answer:
A certain portion of the land will be set aside as wildlife habitat
Answer: 8.1 days
Explanation:
Expression for rate law for first order kinetics is given by:

where,
k = rate constant
t = age of sample
a = let initial amount of the reactant = x
a - x = amount left after decay process=
a) to find rate constant
Half life is the amount of time taken by a radioactive material to decay to half of its original value.


b) for completion of one fourth of reaction



Thus after 8.1 days , one fourth of original amount will remain.
Answer:
Steam because steam pushes out and ice stays dormant.
Explanation: