115 grams of solid aluminum perchlorate are dissolved in 504 ml of water at 20°C. Calculate the concentration of aluminum perchlorate in parts-per-million.

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Helium decays to form lithium. which equation correctly describes this decay?