How much heat must be added to a 8.21 g sample of gold to increase its temperature by 6.2 °C? The specific heat of gold is 0.13 J/g°C.

Different isotopes indicate that an element will have different numbers of

What must happen before a body cell can begin mitotic cell division

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.