How much power is used to move a 25 kg mass 8 meters in 15 seconds?

the correct answer is a

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the answer is barium and copper bromide