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Mole concept

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Other Lessons for You

There are many elements on the Earth. But ancient days Scientists were identified only 18 elements and they are classified these elements into two groups. They are: 1. Metals 2. Non-Metals After that...

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The Atom: A quick guide

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Mole Concept Ostwald suggested the term “mole” means heap in Latin. A mole is defined as the amount of substance which contains the exact same number of elementary particles (i.e. atoms,...

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Why hydrated copper sulphate blue in colour

Hydrated copper sulphate is blue in colour due to the presence of water in it. Without the presence of water, it has a white colour.CuSO4.2H2O, hydrated copper sulphate.

V

Vaishali R.

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Periodic Table: How electro -negativity varies

Electronegativity is the tendency of an atom to attract electrons in its outer shell (remember, electrons give away or take away happens only in the valence shell). This tendency is higher for non-metal...

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Which of the following is used in photoelectric cells? (a) Na (b) K (c) Li (d) Cs

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Which of the following statement(s) is/are correct in the case of heavy water? (a) Heavy water is used...

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How can one get 90% and above in the CBSE class 12 board without any coaching and tuition?

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Which property of liquid is responsible for spherical shape of drop?

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How do I prepare for IIT-JEE in one year (Class 12) without coaching?

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