There are 4 well-studied colligative properties of water: freezing point depression, boiling point elevation, vapor pressure lowering, and osmotic pressure. Pick one of these and discuss its application to modern life, either on main street or in industry

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.

May someone me with these science questions

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.