Is hot dog relish homogeneous or heterogeneous

Concerning the 10.0 ml of 0.50 m nacl to 100 ml of solution: when a solution is diluted, does it change the number of moles dissolved?

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

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