Question

What mass of iron is found in 280 g of 2 ppm solution?

Answer 1

Answer: The mass of iron found in the solution is 0.56 mg

Step-by-step explanation:

ppm is the amount of solute (in milligrams) present in kilogram of a solvent. It is also known as parts-per million.

To calculate the ppm of oxygen in sea water, we use the equation:

`\text{ppm}=\frac{\text{Mass of solute}}{\text{Mass of solution}}* 10^6`

Both the masses are in grams.

We are given:

Concentration of iron = 2 ppm

Mass of solution = 280 g

Putting values in above equation, we get:

`2=\frac{\text{Mass of iron}}{280g}* 10^6\\\\\text{Mass of iron}=(2* 280)/(10^6)=0.00056g=0.56mg`

Conversion factor used: 1 g = 1000 mg

Hence, the mass of iron found in the solution is 0.56 mg