Under the same conditions, if hydrogen gas (H2) effuses at a rate of 45 m/s, what would be the rate of effusion of carbon dioxide gas. (3 sig figs)

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.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123