Blog

What is the mol fraction of ethanol, C2H5OH, in a solution of 75.3g of ethanol and 525g of water?

A sealed container contains 0.352 L of water with an atmosphere of oxygen gas. What is the concentration of O2 in the water if the external pressure is 4.24 atm given that kH for O2 is 1.66 × 10-6 M/mm Hg at this temperature?

To make a 3.0 M solution, one could take 3.00 moles of solute and add

For a liquid solution made by dissolving a solid or a gas in a liquid, the

How many moles of KF are contained in 244 mL of 0.135 m KF solution? The density of the solution is 1.22 g/mL.

What volume of 3.00 M CH3OH solution is needed to provide 0.500 mol of CH3OH?

Although there are exceptions, which is most likely to be true for the dissolving of a solid in a liquid?

Using the Arrhenius definition, define an acid and a base.  (2 marks)

Which of the following would be considered a base under the Arrhenius definition?

Zinc reacts with hydrochloric acid according to the equation:  Zn + 2HCl -> ZnCl2 + H2       How many moles of H2 are produced from 20.0 g of Zn?