What is the net ionic equation for mgso4 + na2co3

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.

Calcium chloride +gold(1) oxide—>

Joan writes four numbers on the board in standard form, and then she writes their scientific notation