When a calorimeter is used, no thermal energy is exchanged between the contents of the container and the outside air. if an exothermic reaction is conducted inside a calorimeter filled with water, which of the following statements best describes what occurs during the reaction?
the thermometer will show an increase in the water's temperature.
the total energy of the reaction will increase.
the reaction will absorb thermal energy from the surroundings.
the potential energy of the reactants will be lower than that of the reactants.

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.

Which position represents spring in the southern hemisphere? a) b) c) d)

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