Time left $0$:$40$:$50$

Calculate the molar analytical concentration of $H_{2}S{O}_4(98\frac{g}{m}ol)$ in a solution that is $50\%(\frac{w}{v})H_{2}S{O}_4$

a$.2\mathrm{.}0$

b$.5\mathrm{.}1$

c$.0\mathrm{.}306$

d$.4\mathrm{.}1$

In order to prepare $200mL$ of $0\mathrm{.}15M$ of chloride, $C{l}^{-}(35\frac{g}{m}ol),$ you need to pipette $mL$ of $0\mathrm{.}25MCrC{l}_3$ and dilute to the required volume.

Round your answer to two decimal digits

Consider the reaction

$M{g}_{2}S{i}_{(s)}+4H_2{O}_{(l)}2Mg(OH{)}_{2(aq)}+Si{H}_{4(g)}$

If $40\mathrm{.}0g$ of $M{g}_{2}Si(77\frac{g}{m}ol)$ is mixed with $50g{H}_{2}O(18\frac{g}{m}ol),$ calculate the mass of $Si{H}_4(32\frac{g}{m}ol)$ formed

Answer: