The specific heat of a metal is $0.031 \ cal \ g^{-1} \ ^\circ C^{-1}$ and its equivalent weight is $103.6$. What is the exact atomic weight of the metal?

If the molecular mass and atomic mass of sulphur are $256$ and $32$ respectively,its atomicity is:

The mass of one molecule of the compound $C_6H_{12}O_6$ is .........

Which phrase would be incorrect to use?

An element has two main isotopes of mass numbers $85$ and $87$. In nature,they occur in the ratio of $75\%$ and $25\%$ respectively. The atomic weight of the element will be approximately:

Oxygen contains $90\%$ of $^{16}O$ and $10\%$ of $^{18}O$. Its atomic mass is