Chemistry, 30.09.2019 22:30 kayleigh2037
Rubidium is a soft, silvery-white metal that has two common isotopes, 85rb and 87rb with masses of 84.904 and 87.099 respectively. if the abundance of 85rb is 72.2% and the abundance of 87rb is 27.8%, what is the average atomic mass of rubidium? submit your answer with three decimal places.
Answers: 3
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.
Answers: 1
Chemistry, 22.06.2019 19:50
Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+
Answers: 1
Chemistry, 22.06.2019 23:00
How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.
Answers: 1
Rubidium is a soft, silvery-white metal that has two common isotopes, 85rb and 87rb with masses of 8...
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