Asample of co2 gas at 22 degrees celsius and 1 atm has a volume of 2.00 l. determine the ratio of the original volume to the final volume when

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Match the mixture with the substance// i really need on this guys (it’s a pic btw)