Understanding Parts Per Million

What is the mass of one liter of water?

• 1 kilogram

• 1 gram

• 100 grams

• 10 kilograms

What is the density of water in terms of grams per cubic centimeter?

• 1 gram per cubic centimeter

• 10 grams per cubic centimeter

• 0.1 grams per cubic centimeter

• 100 grams per cubic centimeter

How many cubic millimeters are there in one liter?

• 1,000,000

• 100,000

• 10,000

• 1,000

What is the relationship between cubic centimeters and cubic millimeters?

• 1 cubic centimeter equals 10 cubic millimeters

• 1 cubic centimeter equals 100 cubic millimeters

• 1 cubic centimeter equals 1,000 cubic millimeters

• 1 cubic centimeter equals 10,000 cubic millimeters

What does one part per million (ppm) equate to in terms of milligrams per liter?

• 1,000 milligrams per liter

• 1 milligram per liter

• 100 milligrams per liter

• 10 milligrams per liter

If you add one drop of solute to a 10,000-gallon pool, what is the concentration in terms of parts?

• Parts per million

• Parts per billion

• Parts per trillion

• Parts per quadrillion

What is the formula to calculate parts per million (ppm)?

• Grams of solute times grams of solution

• Grams of solution divided by grams of solute times a million

• Grams of solute divided by grams of solution times a million

• Grams of solute divided by grams of solution

In the first example, what is the concentration of arsenic in parts per million?

• 3,333 ppm

• 5,000 ppm

• 10,000 ppm

• 1,500 ppm

How many grams of solute are dissolved in 100 grams of a 1.2 * 10^2 ppm solution?

• 0.012 grams

• 120 grams

• 1.2 grams

• 12 grams

In the third example, what is the mass of the solution if 30 grams of solute are dissolved in it with a concentration of 12 ppm?

• 250,000 grams

• 2,500 grams

• 25,000 grams

• 2,500,000 grams