Does a solvent have to be able to dissolve a solute, it really makes no difference if the solvent molecules are able to maneuver between the molecules of solute

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?

All of the following describe uses of nonrenewable energy sources except

How long could you survive without electricity? what parts of your life would be affected by loss of electricity? should you prepare for an electricity outage, and if so, how would you prepare? what backup system could your family or community install to generate limited amounts of electricity during an outage? how does this system create an electric force field and generate electric current?