Al(s)+HCl(aq)→AlCl3(aq)+H2(g) Express your answer as a chemical equation. Identify all of the phases in your answer.

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³