What coefficient is required for $H_{2}O$ in order to balance the equation?

$B{e}_3{N}_2+H_{2}OBe(OH{)}_2+N{H}_3$

What are the two types of chemical bonds that form different molecules? Protens and neutrons

Define mole in terms of mass, number of atoms and molar volume mass is the puantity

What is the equivalent weight $($define$)$ and estimate it for $H_{3}P{O}_4($AW H$-1,P-31,O-16)$

How many protons are in $0\mathrm{.}05$ grams of $Al($AW $27)$