Acertain rock has a mass of 125 g. the rock is gently lowered into a graduated cylinder whose water level is 250 ml. when the rock is completely submerged, the water level rises to 300 ml what is the volume of the rock?

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

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

What is avogadro’s number, and why is it useful