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Mole Concept

Q. 16. Determine the formula mass (in amu) for the following compounds: b) CH3COOH

Solved • Sep 13, 2019

Mole Concept

Q. 16. Determine the formula mass (in amu) for the following compounds: a) NaOH

Solved • Sep 13, 2019

Le Chatelier's Principle

Q. Predict if any changes will change the perturbation in the table below will cause in the composition of the mixture in the vessel

Solved • Sep 16, 2019

Dilution

Q. 13. What volume (in mL) of a 10.0 M stock solution of aqueous magnesium bromide is required to make a 500. mL 0.250 M solution?

Solved • Sep 13, 2019

Dilution

Q. 14. A 125 mL sample of a 15.0 M stock aqueous solution was diluted to 2.00 L through the addition of water. What is the concentration (in M) of the dilute solution?

Solved • Sep 13, 2019

Molarity

Q. 12. A 50.0 g sample of SAE 15W-40 motor oil is sent for testing. It was found to contain 13.4 μg of lead. What is the concentration (in M) in the oil? (doil = 0.87 g mL^-1)

Solved • Sep 13, 2019

Mass Percent Formula

Q. 10. What is the percent composition by mass (to one decimal place) of copper in 80.0 kg of copper(II) phosphate?

Solved • Sep 13, 2019