3) We are tasked with figuring out whether an iron paperweight is hollow. It has a mass of 239.0 g and
a volume of 43.0 mL. Solid iron has a density of 7.8
g/mL. What is the density of the paperweight, and
could it be hollow?

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons