There are two important isotopes of uranium— 235u and 238u; these isotopes are nearly identical chemically but have different atomic masses. only 235u is very useful in nuclear reactors. one of the techniques for separating them (gas diffusion) is based on the different average velocities vrms of uranium hexafluoride gas, uf6. (a) the molecular masses for 235uuf6 and 238uuf6 are 349.0 g/mol and 352.0 g/mol, respectively. what is the ratio of their average velocities?

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

What term describes technology that operates on an atomic level