Question

Given the starting solution had a concentration of 1.25 m, how many moles of co[h2o]6cl2 were available in the amount of starting solution you used

Answer 1

Molarity of solution is defined as number of moles present in one liter solution. Mathematically, it is expressed as 
Molarity = $\frac{\text{number of moles}}{\text{volume of solution(l)}}$

Thus, if 1 mole of solute is present in 1 liter solution, molarity of solution is 1 M.

In present case, initial conc, of solution was 1.25 M.

∴ Number of moles of co[h2o]6cl2  available initially = 1.25 mole, if the solution is 1 liter