potassium, Chemistry

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Atom of a chemical element, The atomic weight is the weight of an atom of a...

The atomic weight is the weight of an atom of a chemical element.  For instance, the atomic weight of oxygen is 15.9994 and the atomic weight of hydrogen is 1.0079.  Write a script

The electronic configuration, Which of the following pairs of species has s...

Which of the following pairs of species has same electronic configuration: (1) Zn 2   and Ni 2+                              (2) Co +3  and  Ni 4    (3)  Co 2+   and Ni

Synthetic rubber - classification of rubber, Synthetic Rubber - Classificat...

Synthetic Rubber - Classification of Rubber The synthetic rubber is acquired by polymerising specific organic compounds that may have properties identical to rubber and some w

Salt bridge, how does salt bridge works??

how does salt bridge works??

Entropy change for the reaction., The standard free energy change for a rea...

The standard free energy change for a reaction is -212.3 kJ mol -1 . If the enthalpy of the reaction is - 216.7 kJ mol -1 , calculate the entropy change for the reaction.

Number of two electron can have the same values quantum no., Number of two...

Number of two electron can have the same values of ...... quantum numbers: (1) One  (2) Two          (3) Three      (4) Four Ans:  Three

Mole concept, 0.45 g of anhydrous oxalic acid is reacted with 50 ml of KMNO...

0.45 g of anhydrous oxalic acid is reacted with 50 ml of KMNO4 . Then normality of KMnO4 is??

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