what is the mass of carbon dioxide which contain the same number of molecules as are contained in 14 gram of oxygen?

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

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Which terms are used to identify pure substances