Density of 2.5g and mass of 5g what is the volume

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

Name atleast 3 type of energy associated with the microwave

How many moles does 80.0 h2o respresent