How to find molarity 1.mass 2. molar mass 3. volume of water added?

Molarity = (numer of mole solute) / (volume of the solution)

number of mole solute = mass solute/molar mass solute

Molarity =( mass solute/molar mass solute)/ (volume of the solution)=

= ( mass solute/((molar mass solute)*(volume of the solution))

If m is a mass of the solute, M is a molar mass a solute, V is a volume of the solution (we can think as a volume of water added).

Molarity = m/(M*V)

c. electrical charges of ionic bonds.