Chemistry, 17.10.2019 19:00 cupcake3103670
Uranium is used in nuclear reactors and is a rare element on earth. uranium has three common isotopes. if the abundance of 234u is 0.01% the abundance of 235u is 0.71% and the abundance of 238u is 99.28% what is the average atomic mass of uranium
Answers: 2
Chemistry, 22.06.2019 04:00
4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal
Answers: 2
Chemistry, 22.06.2019 10:30
What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%
Answers: 1
Chemistry, 22.06.2019 20:00
The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.
Answers: 3
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
Uranium is used in nuclear reactors and is a rare element on earth. uranium has three common isotope...
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