It is potassium 39 definately
I think the answer is C , more dense
Answer:
They affect the weathering of molecules and atoms.
Explanation:
<span>To calculate the average mass of the element, we take the summation of the product of the isotope mass and the percent abundance. In this case, it is 0.9963 * 14.003 amu + 0.0037* 15.00 amu. This is equal to an average mass of 14.00668889 amu.</span>
