Uranium has three common isotopes. If the abundance of Uranium-234 is 0.01%, the abundance of Uranium-235 is 0.71%, and the abundance of U-238 is 99.28%, what is the average atomic mass of uranium?

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