Scott is making a chart to show the difference between chemical reactions and nuclear reactions. Which part of his chart is incorrect? Chemical Reaction
Nuclear Reaction
Line 1
Happens in the nucleus of atoms
Happens between atoms
Line 2
Forms new compounds
Forms new atoms and radioactive particles
Line 3
Involves small amounts of energy
Involves large amounts of energy
O Line 1 is incorrect
O Lines 1 and 2 are incorrect
O Lines 2 and 3 are incorrect
O Line 3 is incorrect

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.