3. Caculate the amount of thermal energy required to raise 2.5kg of Zinc
From a temperature of 50°C to 65°C, (Solve for O)(C=388 JkOC
specific heat of zinc)

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Why is the melting of ice a physical change ?