What is the % by mass of nickel in nickel phosphate (Ni3(PO4)2)?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

How many moles of bromine are needed to produce 3.23 moles of potassium bromide