to make an aqueous solution of 0.223 M magnesium bromide, using a 250 mL volumetric flask. How much solid magnesium bromide should you add?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Which substance—wood or silver—is the better thermal conductor? a thermal conductor is a material that requires very little heat energy to change its temperature. explain your answer.