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There are 13 electrons in an element whose nucleus comprise 14 neutrons. Obtain atomic number and atomic weight of this element. If atomic weight of the isotope of above element is
Aromatic compounds - Homocyclic or Carbocyclic These compounds contain at least one benzene ring, that is a six-membered carbocyclic ring occupying alternate single and double
what is the gram atomic mass of hydrogen and oxygen?
Q. What are Changes in Matter? Matter is able to undergo two fundamental kinds of changes. Changes that don't alter the composition of matter are called physical changes. Sta
Q. Write short note on units of hardness and their relationship. Sol. Units of hardness and their relationship. (1) Parts Per million (ppm): It is defined as t
The electronic configuration of four elements are given in brackets: L (1s 2 , 2s 2 , 2p 1 , ) M (1s 1 , 2s 2 , 2p 5 ) Q (1s 2, 2s 2 , 2p 6 3s 1 ,) R ( 1s 1 , 2s 2 , 2p
#question.#title..tell me what i do summer vacation class 9th and 10th.
what is the easy wet test of copper?
what is the relation between gram atomic mass and avogadro''s no ?
1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a
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