Chemistry, 06.01.2020 20:31 Shihhschool20
Speed of an electron to orbit radius wire linear charge density is
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Chemistry, 22.06.2019 05:10
How many miles of water are produced if 5.43 mol pbo2 are consumed
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Chemistry, 22.06.2019 07:30
Compare and contrast the bohr model and the electron cloud models of the atom.
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
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Chemistry, 22.06.2019 14:00
Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
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Speed of an electron to orbit radius wire linear charge density is...
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