Question

A solution is made containing 4.6 g of sodium chloride per 250g of water.

What is the weight/weight % or percent by mass of the solute?

Answer 1

Answer: 1.81

Step-by-step explanation:

Answer 2

`\large \boxed{1.81 \, \%}`

Step-by-step explanation:

`\text{Mass percent} = \frac{\text{mass of solute} }{\text{mass of solution}} * 100 \, \%`

Data:

Mass of NaCl = 4.6 g

Mass of water = 250 g

Calculations:

Mass of solution = mass of NaCl + mass of water = 4.6 g + 250 g = 254.6 g.

`\text{\% m/m} = \frac{\text{4.6 g} }{\text{254.6 g}} * 100 \, \% = \mathbf{1.81 \, \%}\\\\\text{The percent by mass of NaCl is $\large \boxed{\mathbf{1.81 \, \%}}$}`