The volume of a sample of hydrogen gas was decreased from 14.19l to 7.48 l at constant temperature. if the final pressure exerted by the hydrogen gas sample was 6.14 atm, what pressure did the hydrogen gas exert before its volume was decreased?

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.

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel

Which metals are called noble metals