Question

Given that the molar mass of NaCl is 58.44 g/mol, what is the molarity of a solution that contains 87.75 g of NaCl in 500. mL of solution?
0.333 M
0.751 M
1.50 M
3.00 M

Answer 1

Grams/Molar Mass = Moles

Molarity = Moles/Liters

Answer 2

no. of mole for NaCl = Given Mass of NaCl / Molar Mass of Nacl

both given mass & molar mass are given in question

now to clculate molarity

molarity = no. of moles of solute (here NaCl) / Volume of solution in Liters

u r given volume 500 ml which is equal to 500/1000 L = 0.5 L

Now put all appropriate values in Formulae