Question

Fill in the blanks:
(a) Molecular weight of a gas is twice its __________.
(b) Mass of 22.4 litre of a gas at STP is ___________.
(c) One gram atom of an element contains __________ atoms.
(d) One a.m.u. is the mass of __________ atom of C¹².
(e) Avogadro's number is equal to _________.

Answer 1

(a) Molecular weight of a gas is twice its vapour density.
(b) Mass of 22.4 litre of a gas at STP is molar mass.
(c) One gram atom of an element contains $\underline{6.023\times {10}^{23}}$ atoms.
(d) One a.m.u. is the mass of $\underline{{\left(\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$12$}\right.\right)}^{\mathrm{th}}}$ atom of C¹².
(e) Avogadro's number is equal to $\underline{6.023\times {10}^{23}}$.