What should be the equivalent weight of phosphorous acid,if $P=31, O=16, H=1$?

If the mass of an electron is halved,the mass of a proton is doubled,and the mass of a neutron is $3/4$ of its original mass,then what will be the new atomic mass of an $O^{16}$ atom?

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

$0.45 \ g$ of an acid (mol wt. $= 90$) required $20 \ mL$ of $0.5 \ N$ $KOH$ for complete neutralization. The basicity of the acid is:

What is the mass in gram of $1$ atom of an element if its atomic mass is $10 \ u$?

What is the average atomic mass of chlorine if its two isotopes $^{35}Cl$ and $^{37}Cl$ exist in a relative abundance of $75\%$ and $25\%$ respectively?