What is the final volume of COH solution prepared from 30 mL of 3.60 M KOH if you wanted the final concentration to be 0.45 M?

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

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.