chemistry test

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Chemistry test

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The number of water molecules in 250 ml of water is closest to
Given the density of water 1.0 gm ml-1, Avogadro number =6.023 × 1023

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Shielding constant of the 4S electron of chromium atom

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What is the radius of the Argon atom if Tc = - 122°C, Pc = 48 atm?

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The number of molecules presents per ml of an ideal gas maintained the pressure of 7.6 ×10⁻³ mm of Hg at 0°C

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The oxidation number of phosphorus in Ba(H₂PO₂)₂

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The number of gaseous molecules left in a volume of 1 mm³ if it pumped out to give a vacuum of 10⁻⁶ mm Hg at 298

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Arrange the following alkenes in order of increasing stability

  1. Me₂C=CH₂
  2. cis-MeCH=CHMe
  3. trans-MeCH=CHMe
  4. MeCH₂CH=CH₂

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Boyle temperature of nitrogen gas if a = 1.4 atm lit² mol⁻² and b = 0.04 lit mol⁻¹

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The oxidation number of chromium in Cr₂O₅

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Effective nuclear charge of the hydrogen atom

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The oxidation number of Iron in [Fe(H₂O)₅(NO)⁺]SO₄

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1 debye is equal to how many coulomb meters?

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Write down the common names of the following organic compound

CH₂CH₂CH₂CH=CH₂

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The Critical constants for water are 647 K, 22.09 MPa and 0.0566 dm³mol⁻¹, the value of Van der Waals constant b

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