Help on a science question from 6th grade

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

Which of these best describes an ionic bond?

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.