A student placed 700g of water at 28° c in the freezer. after 6 minutes and 15 seconds the water was transformed to ice. calculate the heat energy transferred from the water during the temperature change

Explain the consequences of this addiction to the brain tissue

What occurs during a combustion reaction

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?