Question

a solution has a concentration of 2250 g per kg what is the concentration in PPM​

Answer 1

Answer:

2.25 ppm

Explanation:

convert the mass in micrograms to mass in milligrams .

2250kg = 2250 kg÷ 1000 muo g MgMG-1

= 2.25 mg.

rewrite the concentration in mg kg -1

= 2.25 mg kg-1

=" 2 25 ppm "

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Answer 2

2.25 ppm is the right answer.

Given:

• concentration = w/w = 2250 μg kg⁻¹, mass of solute = 2250 μg, mass of solution = 1 kg.

Explanation:

• Write the definition of ppm to be used.
• 1 ppm = 1 mg kg-1 = 1 μg g⁻¹.
• Convert the mass of solute to the desired unit.
• mass of the answer is in kilograms (kg) so the mass of solute should be in milligrams (mg).
• mass = 2250 μg = 2250 μg/1000 μg mg⁻¹ = 2.25 mg.
• Calculate concentration: divide mass of solute (mg) via way of means of mass of solution (kg).
• concentration = mass of solute (mg)/mass of solution (kg)concentration = 2.25 mg/1 kg = 2.25 mg kg⁻¹.
• 1 ppm = 1 mg kg-1 consequently 2.25 mg kg-1 = 2.25 ppm2250 μg kg-1 = 2.25 ppm.

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