One summer vacation morning, the weather was warm and humid. About 3:00, heavy clouds formed, and then there was a severe thunderstorm with rain and hail. After the storm, the sun came out, but the temperature had dropped 15 degree celcius. Explain each change in the days weather.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

All forces cause motion? true or false

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions