Exercises: Calculating concentrations in ppm
Practice★★☆
In a 4 L water sample from a river, 12 mg of nitrates were detected. Calculate the concentration in ppm ($\text{mg/L}$) and round to one decimal place.
In a 4 L water sample from a river, 12 mg of nitrates were detected. Calculate the concentration in ppm ($\text{mg/L}$) and round to one decimal place.
Practice★★★
A 2.5 kg soil sample was taken from a farmland plot, and the laboratory reported a concentration of 40 ppm of a heavy metal. Calculate how many milligrams of that metal…
A 2.5 kg soil sample was taken from a farmland plot, and the laboratory reported a concentration of 40 ppm of a heavy metal. Calculate how many milligrams of that metal the sample contains and, at the same rate, how many milligrams there would be in one metric ton (1,000 kg) of soil from the plot.