Taking into account the definition of calorimetry and latent heat, a heat of 2159.5 J is needed to melt 35 g of iodine.
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Latent heat is defined as the energy required by a quantity of substance to change state.
When this change consists of changing from a solid to a liquid phase, it is called heat of fusion and when the change occurs from a liquid to a gaseous state, it is called heat of vaporization.
The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to
Q = m×L
where L is called the latent heat of the substance and depends on the type of phase change.
In this case, you know:
Replacing in the definition of latent heat:
Q= 35 g× 61.7 [tex]\frac{J}{g}[/tex]
Solving:
Q=2159.5 J
Finally, a heat of 2159.5 J is needed to melt 35 g of iodine.
Learn more about calorimetry:
brainly.com/question/14057615
brainly.com/question/24988785
brainly.com/question/21315372
brainly.com/question/13959344
brainly.com/question/14309811
brainly.com/question/23578297
#SPJ1
