.Peste 200 g soluţie de clorură de sodiu de concentraţie 10% se adaugă 400g soluţie de clorură 10p de sodiu de concentraţie 20% şi 400g apă. Ce concentraţie procentuală are soluţia finală?

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

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)

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory