What is the molar mass of the compound represented by the following structural formula?

An appropriate method for molecular weight determination of chloroform $(CHCl_3)$ is:

Suppose two elements $X$ and $Y$ combine to form two compounds $XY_{2}$ and $X_{2}Y_{3}$. If $0.05 \ mol$ of $XY_{2}$ weighs $5 \ g$ while $3.011 \times 10^{23}$ molecules of $X_{2}Y_{3}$ weighs $85 \ g$,then atomic masses of $X$ and $Y$ are respectively :

$A$ metal chloride contains $49.5\%$ chlorine. The specific heat of the metal is $0.064 \ cal \ g^{-1} \ ^\circ C^{-1}$. What is the exact atomic weight of the metal?

In terms of energy,$1 \ amu$ is equal to:

The weight of a molecule of the compound $C_{60}H_{122}$ is