Chemistry, 21.08.2019 21:20 orcawave9408
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?
Answers: 2
Chemistry, 22.06.2019 22:30
Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h
Answers: 1
Chemistry, 23.06.2019 03:30
In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.
Answers: 1
Chemistry, 23.06.2019 09:00
20 grams of water. she poured out 15 grams. which of the following physical properties of the water changes? a .boiling point b. density c .electrical conductivity d .volume
Answers: 2
There are two important isotopes of uranium— 235u and 238u; these isotopes are nearly identical che...
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