HEED HELP ASAP PLS A scientist is working with two compounds. Compound A has a mass of 20.00 u. Compound B has a mass of 60.00 u. How will the number of molecules in 5.00 g of Compound A compare to the number of molecules in 15.00 g of Compound B?

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)

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?