Explain why tap water conducts an electric current but purified water does not

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Most metamorphosis processes take place