Which equation below is used to calculate the energy needed for a change of state? A. specific latent heat x mass B. mass / specific latent heat C. specific latent heat / mass

Final answer: The energy needed for a change of state can be calculated using the equation 'specific latent heat x mass'. This relationship is derived from the concept of latent heat, which accounts for the energy absorbed or released in a phase change. Explanation: The correct equation to calculate the energy needed for a change of state is: specific latent heat x mass. This equation is derived from the concept of latent heat, which refers to the heat absorbed or released in a phase change in a sample of mass. The energy required for a substance to undergo a phase change is determined by its specific latent heat and its mass. For example, the heat, Q, required to change the phase of a sample of mass (m) can be calculated using the equations: Q = mLf (for melting/freezing), Q = mLv (for vaporization/condensation). In these equations, Lf stands for the latent heat of fusion and Lv stands for the latent heat of vaporization. Both Lf and Lv depend on the substance, particularly on the strength of its molecular forces. It's also important to note that the energy for a phase change is dependent on the number and strength of intermolecular bonds, making the mass of substance a crucial factor in calculating energy change. The more mass a substance has, the more energy required for a change of state due to more bonds being present that need to be broken or formed. Learn more about latent heat here: brainly.com/question/28044951 #SPJ11