I need help please?

A student weighed out $0\mathrm{.}215g$ of $Cu(N{O}_3{)}_2*3H_{2}O$ into a $50\mathrm{.}00mL$ volumetric flask and diluted to the line using $0\mathrm{.}25MN{H}_3.$ The student labels this Solution $1.$

a$.$ How many moles of $Cu(N{O}_3{)}_2*3H_{2}O$ were added to the flask?

b$.$ How many moles of $C{u}^{2+}$ were added to the flask $($the mole ratio between $Cu(N{O}_3{)}_2*3H_{2}O$:$C{u}^{2+}$ is $($:$1$:$1\}?$

c$.$ What is the Molarity of the $C{u}^{2+}$ solution?

Question $2$:

student transferred $25\mathrm{.}00mL$ of Solution $1$ from above to a $50\mathrm{.}00mL$ volumetric flask and diluted to the line using $0\mathrm{.}25MN{H}_3.$ What is the concentration of this new solution?