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Chemistry, 22.06.2019 10:00
Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.
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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.
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Chemistry, 23.06.2019 00:30
Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.
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Chemistry, 23.06.2019 03:30
Name atleast 3 type of energy associated with the microwave
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Chemistry, 22.07.2019 16:00
Mathematics, 22.07.2019 16:00
History, 22.07.2019 16:00
English, 22.07.2019 16:00
English, 22.07.2019 16:00
Mathematics, 22.07.2019 16:00
English, 22.07.2019 16:00
Chemistry, 22.07.2019 16:00
Mathematics, 22.07.2019 16:00