Normality of $2 \, M$ sulphuric acid is

When excess silver nitrate is added to $5.850 \ g$ of sodium chloride,how many grams of silver chloride are produced?

Volume of water needed to mix with $10 \ mL$ of $10 \ N$ $HNO_3$ to get $0.1 \ N$ $HNO_3$ is ........... $mL$.

What is the volume of $4.4 \ g$ of $CO_2$ at $STP$ in $L$?

The amount of iron $(Fe)$ in $g$ which can be produced from $600 \ g$ of magnetite ore is [Atomic mass of $Fe$ : $55.8$]

Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time,the passage of air is stopped,but the heating is continued in a closed furnace such that the contents undergo self-reduction. The weight (in $kg$) of $Pb$ produced per $kg$ of $O_2$ consumed is $. . . . .$ (Atomic weights in $g \ mol^{-1}: O = 16, S = 32, Pb = 207$)