A$)$ If I dissolve $125\mathrm{.}0$ grams of calcium nitrate in $150.mL$ of water, what is the molarity of the resulting solution? $(10)$

B$)$ If I add $140.$ more $mL$ of water, what is the resulting molarity? $(5)$

C$)$ What is the concentration of nitrate ions in the diluted $(2$B$)$ solution? $(5)$