Answer:

Explanation:
The mass of radioactive isotope at a certain time is given by the following expression:

Time constant can be calculed in terms of half-life:



The initial mass is:


Answer:
2,137... gallons
Explanation:
(160+140+14x16x2)/350=2,137...
A cl2 molecule is a diatomic molecule composed of two atoms of identical halogen - chlorine. In this case, this molecule is composed of covalent bonds in which the identical atom- molecule tells that this is also non-polar. To break the bond, energy has to be absorbed to break the intermolecular force that bound the molecule together.
The correct answer is B. on Apex!