An atomic model shows 19 protons, 20 neutrons, and 19 electrons. What is the mass number of the atom?

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.