Manipur Board Solutions for Chapter: Symbols, Formulas and Equations, Exercise 3: Let us answer these:

What mass in grams is represented by $0.44$ mole of ${\mathrm{CO}}_2$?

What mass in grams is represented by $3$ mole of ${\mathrm{NH}}_3$?

The mass of a single atom M is $3.05\times {10}^{-22}\mathrm{g}$. What is its atomic mass?

Which has more number of atoms, $50\mathrm{g}$ sodium or $50\mathrm{g}$ of calcium? (Given atomic mass of $\mathrm{Na}=23\mathrm{u},\mathrm{Ca}=40\mathrm{u}$)