On a cold, winter day, sheena rubs her hands together. stored chemical energy is transformed into mechanical energy. due to the law of conservation of energy, some of the energy is also transformed a)kinetic energy b)light energy c)solar energy d)heat energy

The answer is: D) heat energy.

In this example energy is transformed from chemical energy to thermal energy (heat).

The law of conservation of energy states that the total energy of an isolated system remains constant.

Energy can neither be created nor destroyed; it can only be transformed or transferred from one form (in this example chemical energy) to another (in this example thermal energy).

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

i believe that it is a exoplanet