How much heat is required to raise the temperature of 8.0 g of water by 3.0 °C?

Aspirin has a density of 1.40 g/cm3 what is the volume in cubic centimeters of a tablet weighing 320 mg ?

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?