Chemistry Concentration

0.006 grams of mercury was found in a 5 L sample of water. What is the concentration of mercury in ppm?

• 120 ppm

• 1.2 ppm

• 120000 ppm

• 1200 ppm

What is the concentration in ppm when 30 mg of NaCl are dissolved in 600 mL of water?

• 0.05 ppm

• 18 ppm

• 50 ppm

• 1800 ppm

Determine the concentration in parts per million of a solution containing 1.5 g of Ca(OH)₂ dissolved in 8000 ml of water.

• 12 ppm

• 188 ppm

• 250 ppm

• 5333 ppm

You have 0.00015 grams of sugar dissolved in 500 grams of water. What is the solution's concentration in ppm?

• 0.3 ppm

• 300 ppm

• 0.0003 ppm

• 3 ppm

What is the molarity of a solution that contains 5 moles of solute in 2 liters of solution?

• 2.5 M

• 5 M

• 10 M

• 0.4 M

What is the definition of molarity?

• The mass of a substance in grams

• The number of particles in a substance

• The number of moles of solute per liter of solution

• The volume of solvent in liters

Tags

NGSS.HS-PS1-5

What is the concentration in parts per million of a solution containing 2.0 g of KNO₃ in 4500 g of water?

• 415 ppm

• 530 ppm

• 444 ppm

• 473 ppm

Determine the molarity of a solution containing 1.5 mol of NaCl dissolved in 4 L of water.

• 0.375 M

• 2.67 M

• 0.455 M

• 2.35 M

How many moles of KI are present in 5 L of a 2 M solution ?

• 5 mol

• 10 mol

• 2.5 mol

• 7 mol

What is the molarity of a solution containing 150 g of NaNO₃ dissolved in 3.5 L of water?

• 1.99 M

• 42.86 M

• 0.85 M

• 0.50 M