Use the periodic table to determine which of the following could be an isotope of bromine (Br).
Check all that apply.
Z = 79, A = 196
Z=35, A = 79
A = 79, N = 44
Z=44, N = 44

Part of molten rock at mid-ocean ridges

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth