If 832j of energy is required to raise the temperature of a sample of aluminum from 20.0°c to 97.0°c, what mass is the sample of aluminum? (the specific heat of aluminum is 0.90 j/(g × ° 0.10 g 10.0 g 12.0 g 57.7 g

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion