A) the change in the internal energy of a system that absorbs 2,500 j of heat and that does 7,655 j of work on the surroundings is j.

b) the δe of a system that absorbs 12.4j of heat and does 4.2 j of work on the surroundings is j.

What does the process of natural selection involve

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?