Acylinder and piston assembly (defined as the system) is warmed by an external flame. the contents of the cylinder expand, doing work on the surroundings by pushing the piston outward against the external pressure.

if the system absorbs 563 j of heat and does 498 j of work during the expansion, what is the value of δe?

Compare and contrast physical changes with chemical changes.

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

What is the most important factor in determining climates.