potassium, Chemistry

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what is potassium

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Total number of valence electron, The total number of valence electrons in ...

The total number of valence electrons in 4.2 gm N - 3   of ion is ( N A is the Avogadro's number): (1) 1.6N A                               (2) 3.2N A

zinc oxide through reduction with co, why zinc extracted from zinc oxide t...

why zinc extracted from zinc oxide through reduction with co? Ans) Reducing agent should have more negative ΔG value. In case of zinc oxide ,Zn has more negative ΔG value then CO

PHOTOCHEMISTRY, PHOTO CHEMICAL COMBINATION OF HYDROGEN&IODINE

PHOTO CHEMICAL COMBINATION OF HYDROGEN&IODINE

The energy that opposes dissolution, The energy that opposes dissolution of...

The energy that opposes dissolution of a solvent is: (1) Hydration energy                     (2) Lattice energy    (3) Internal energy      (4) Bond energy Ans:  B

Sulfur, SULFUR, SELENIUM AND TELLURIUM The elements known commonly as th...

SULFUR, SELENIUM AND TELLURIUM The elements known commonly as the chalcogens are in the same group (16) as oxygen. They form some compounds same to those of oxygen, but show m

Physical properties of maleic acid and fumaric acid, Physical Properties of...

Physical Properties of Maleic Acid and Fumaric Acid (i) Maleic Acid and Fumaric Acid Both are colourless crystalline solids. They both are soluble in water. (ii) The melting

Bohr''s model, which is the main postulate of bohr''s model of atom

which is the main postulate of bohr''s model of atom

Equilibrium equations, 2NO N2 + O2 has a Keq of 85 Keq = [N2}{02} ...

2NO N2 + O2 has a Keq of 85 Keq = [N2}{02} ------- [NO]2 at equilibrium, would have more reactants or products

Maximum number of electrons present in n, Maximum number of electrons prese...

Maximum number of electrons present in N  shell is: (1) 18              (2) 32        (3) 2              (4) 8 Ans: 32

1-methylcyclohexene, 1-methylcyclohexene Because 1-methylcyclohexene ha...

1-methylcyclohexene Because 1-methylcyclohexene has dissimilar numbers of alkyl branches at the carbons of its double bond, it gives dissimilar products in the two reactions.

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