The mass $\%$ of carbon in $C_{57}H_{110}O_6$ is

How much copper can be obtained from $100 \ g$ of copper sulfate $(CuSO_4)$ (in $g$)?

$A$ compound has the following composition by weight: $Na = 18.60 \%$,$S = 25.80 \%$,$H = 4.02 \%$,and $O = 51.58 \%$. Assuming that all the hydrogen atoms in the compound are part of water of crystallisation,the correct molecular formula of the compound is:

The number of grams of oxygen in $32.2 \ g$ of $Na_2SO_4 \cdot 10H_2O$ is approximately (in $g$)

The empirical formula of a compound is $CH$. Its molecular weight is $78$. The molecular formula of the compound will be

$A$ substance contains $52.2\%$ carbon,$13\%$ hydrogen,and $34.8\%$ oxygen. If the vapor density of the substance is $46$,find its molecular formula.