When 8.2 grams of libr are dissolved in enough water to create a 150-gram solution, what is the solution's concentration, expressed as a percent by mass?

5.46% is the percent by mass concentration of the solution.

Explanation:

Mass of LiBr= 8.2 g(Solute)

Mass of solution = 150 g (Solution)

Mass of solution = Mass of solute + Mass of solvent

Mass of solute <  Mass of solvent   (Always)

Mass of water = 150 g - 8.2 g = 141.8 g (solvent)

Mass percentage is given as:

5.46% is the percent by mass concentration of the solution.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.