Question

how many grams of sodium chloride are present in a 0.75 M solution with a volume of 500.0 milliliters

Answer 1

\[Molarity=\frac{ mol }{ L }\]
Can you find moles?

Answer 2

To find the grams of NaCl you have to find the mole number first.

To do this, use the molarity formula: M=moles/liters
also convert 500mL to .5L

So, .75M=x/ .5L
x= (.5) (.75)
x=.375 moles of NaCl

then, multiply the mole number of NaCl by the molar mass of NaCl which is 58
(.375)(58)= 21.75 grams of NaCl