How much energy is needed to melt 5 g of ice? The specific latent heat of melting for water is 334000 J/k

Can someone explain to me how to do this problem ?

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

Describe the function of the endomembrane system? what organelles are involved?