Neutral atoms of argon, atomic number 18, have the same number of electrons as each of the following items except: k+ ca+2 ne cl- s-2

How many moles of gas are present if p=11 atm, v=12l, t=185k?

What is the atomic number of an atom that has 6 protons

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