Chemistry Question from JEE Main 2026 · 24 January, Shift 2

Grignard reagent $\mathrm{RMgBr}$ (P) reacts with water and forms a gas (Q). One gram of Q occupies $1.4 \, \text{dm}^3$ at STP. (P) on reaction with dry ice in dry ether followed by $\mathrm{H_3O^+}$ forms compound (Z). $0.1$ mole of (Z) will weigh _____ g. (Nearest integer)