Explanation:
what is the question please
We the Period T we can find the constant k,
That is

We delete the squart root elevating squareing everything,

M is the hanging mass, m is the spring mass,
k is the spring constant and T the time period
a) So for the equation we can compare, that is,

Here x is the hanging mass M, so comparing the equation we know that

b) For the mass of the spring we make similar process, so comparing,

Avogadros number is the definition of a mole. SO a mole is 1 avogadros number of atoms. molar mass is how much 1 avogadros number of atoms weighs. each element on the periodic table has a different mass, so 1 mole of each of the elements has a different molar mass.