When an atom becomes an ion which subatomic particle undergoes a change in number in the atom

How does a hydroelectric power plant converts energy into energy.

Describe the interaction that occurs between two objects with the same electrical charge.

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.