The number of neutrons in the nucleus of an atom can be calculated by 1. adding together the numbers of electrons and protons 2. subtracting the number of protons from the number of electrons 3. subtracting the number of protons from the mass number 4. adding the mass number to the number of protons

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

a corroding iron, if that's one of your choices