A sample contains $0\mathrm{.}249$ moles of $P_4{O}_{10}(283\mathrm{.}88\frac{g}{m}ol).$

$($a$)$ What is the mass of the sample?

$g$

$($b$)$ How many moles of oxygen atoms does it contain?

mol

$($c$)$ What mass of $P$ is in the sample?

g