The phosphate of a metal has the formula $MPO_4$. The formula of its nitrate will be

One liter of hard water contains $12.00 \, mg$ of $Mg^{2+}$. How many milliequivalents of washing soda are required to remove its hardness?

$A$ gas has the formula $(CO)_x$. Its vapour density is $70$. What is the value of $x$?

$2 \ g$ of metal carbonate is neutralized completely by $100 \ mL$ of $0.1 \ N$ $HCl$. The equivalent weight of metal carbonate is:

Chlorine has two naturally occurring isotopes,${}^{35}Cl$ and ${}^{37}Cl$. If the atomic mass of $Cl$ is $35.45$,the ratio of natural abundance of ${}^{35}Cl$ and ${}^{37}Cl$ is closest to (in $: 1$)

If $1.2 \ g$ of a metal displaces $1.12 \ L$ of hydrogen at $NTP$,what is the equivalent weight of the metal?