If 45.8 grams of mgo are dissolved in 205 grams of water, what is the concentration of the solution in percent by mass?

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)

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest