In a metal oxide,there is $20\%$ oxygen by weight. Its equivalent weight is

An oxide of an element contains $67.67\%$ oxygen and the vapour density of its volatile chloride is $79$. What is the atomic weight of the element?

If the equivalent mass of $S$ in $SO_2$ is $8$,what is the equivalent mass of $S$ in $SO_3$?

The equivalent weight of $Zn(OH)_2$ in the following reaction is equal to its: $Zn(OH)_2 + HNO_3 \to Zn(OH)(NO_3) + H_2O$

Atoms consist of protons,neutrons,and electrons. If the mass of neutrons were made half and the mass of electrons were made two times their actual masses,then the atomic mass of $_6C^{12}$ would:

Calculate the molecular mass of a glucose $C_{6}H_{12}O_{6}$ molecule.