# How many grams of NaCl in 50 mL of 0.75 M NaCl solution?

Mar 10, 2016

$2.19 g r a m s N a C l$

#### Explanation:

The MOLARITY of a solution is determined by the ratio of moles of solute, (the material being dissolved), compared to the liters of solution. the equation is $M = \frac{m o l}{L}$

For this $N a C l$ solution we have a Molarity of 0.75 in 50 mL of solution.

Therefore

M = 0.75 M
V = 50 mL or 0.050 L
moles = $x$

$0.75 M = \frac{x m o l}{0.050 L}$

$0.050 L \left(0.75 M\right) = x m o l$

$0.0375 m o l = x$

Use the molar mass of $N a C l$ to convert the moles to grams.

$0.0375 \cancel{m o l N a C l} x \frac{58.44 g N a C l}{1 \cancel{m o l N a C l}} = 2.19 g r a m s N a C l$