descriptive chemistry.., Chemistry

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what is the difference between the allotrope and polymorphs

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Visible range of hydrogen spectrum will contain, Visible range of hydrogen ...

Visible range of hydrogen spectrum will contain the following series: (1)  Pfund (2) Lyman (3) Balmer (4) Brackett Ans: Balmer

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Q. How to evaluate mass number? An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus. Mas

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Calculate the pressures required to achieve a density of 220 g dm -3 , 330 g dm -3 , and 440 g dm -3 at temperatures of 305 K and 350 K.   Properties, like the solvent powe

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Iodine is used as an antiseptic treatment, but it can be poisonous if taken internally! Be sure that the solution is handled with care, and avoid all direct contact with the soluti

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The ionization energy of hydrogen atom is -13.6eV.  The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's co

Explain the molecular basis for the rigor state, 1.  The pH of a 0.02 M sol...

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How to find which compound is acid or basic?, We can find a compound  is  a...

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