Determine the number of protons and neutrons in an isotope of bromine (br) with a mass number/atomic mass of 79. (the atomic number of bromine is 35.)

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

Stage in which a star’s outer layers have started to cool and grow outward?

According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.