Question

How many grams of NaCl would be contained in 600 mL of a solution that is 50% NaCl(m\v)?

Answer 1

Here, 50%(m/v) is the mass concentration, or mass/volume percentage of sodium chloride $\rho$ :

$\rho = \frac{m_{NaCl}, \text{g}}{V_{solution}, \text{mL}}\cdot100\%$

From this equation, we can easily find how many grams of NaCl would be contained in 600 mL of a solution that is 50% NaCl(m\v):

$m_{NaCl} = \rho\cdot V_{solution}/100\% = 50\%\text{(m/v)}\cdot600 \text{mL}/100\% = 300 \text{g}$

Remember that in order to use this equation correctly, you must convert the mass in grams and the volume in milliliters.

Answer: 300 g of NaCl would be contained in 600 mL of a solution that is 50% NaCl(m\v).