Molarity pHET Lab

How do you calculate the number of moles?

• By dividing the mass of the substance by the molar mass of the substance

• By multiplying the volume of the substance by its density

• By adding the atomic masses of the elements in the compound

• By counting the number of atoms in a given sample

What is the mathematical relationship between the number of moles and molarity?

Play with the simulation Molarity for 5 minutes to find out what this simulation is about and describe your observations.

What is the color of Copper (II) Sulfate (CuSO4) solution within the simulation? What is the molarity of the solution at 0.500 mol CuSO4 and 0.5L solution volume?

• Green, 1.5 M
• Blue, 1.0 M
• Red, 0.5 M
• Yellow, 0.75 M

What is the color of Copper (II) Sulfate (CuSO4) solution within the simulation? What is the molarity of the solution at 0.500 mol CuSO4 and 0.2L solution volume?

• Red, 1.5 M
• Green, 3.0 M
• Blue, 2.5 M
• Yellow, 2.0 M
• Answer Not Available

What is the color of Copper (II) Sulfate (CuSO4) solution within the simulation? What is the molarity of the solution at 0.011 mol CuSO4 and 0.5L solution volume?

• Clear, 0.011 M

• Black, unknown

• Blue 0.5

• Blue, 0.022 M

What is the color of Copper (II) Sulfate (CuSO4) solution within the simulation? What is the molarity of the solution at 1.000 mol CuSO4 and 1.000L solution volume?

• 1.000 M
• 1.500 M
• 2.000 M
• 0.500 M

What is the colour of Potassium permanganate solution within the simulation, and what is the molarity of the solution at 0.400 mol KMnO4 and 1.00L solution volume?

• Purple, 0.400 M

• Green, 0.400 M

• Purple, 0.200 M

• Green, 0.200 M

What is the colour of Potassium permanganate solution within the simulation, and what is the molarity of the solution at 0.508 mol KMnO4 and 1.00L solution volume? Also, comment on the saturation of the KMnO4 solution.

• Purple, 0.508 M, Saturated

• Pink, 0.508 M, Unsaturated

• Purple, 0.508 M, Unsaturated

• Colorless, 0.508 M, Saturated

What is the colour of Potassium permanganate solution within the simulation, and what is the molarity of the solution at 0.960 mol KMnO4 and 1.00L solution volume? Also, comment on the saturation of the KMnO4 solution.

• Purple, 0.960 M, Saturated

• Pink, 0.960 M, Unsaturated

• Purple, 0.960 M, Unsaturated

• Colorless, 0.960 M, Saturated