atoms and molecules, Chemistry

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whaqt is a gram moleculer mass

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Show the purification of metals, Q. Show the Purification of Metals? Th...

Q. Show the Purification of Metals? The metals obtained by metallurgical processes still have some impurities which persist from the ore or are derived from the flux or the fue

Indicator , what is indicators?explain theories of indicators?

what is indicators?explain theories of indicators?

What are distinguishing characteristics of metallic bonding, What are disti...

What are distinguishing characteristics of metallic bonding?  Metallic  state  can  be  visualized  like an  array  of positive  ions,  with  a  common  pool  of electrons to

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explain about law of chemical combinations in about 200 words?

The number of orbitals present in the shell with n= 4 is, The number of o...

The number of orbitals present in the shell with n= 4   is: (1) 16              (2) 8       (3) 18               (4) 32 Ans: 16

Resonance effect or mesomeric effect, Resonance effect or mesomeric effect ...

Resonance effect or mesomeric effect (1) The effect where electrons are transferred from a multiple bond to a molecule, or from a multiple bond to a one covalent bond or lone p

Explain a first order reaction, A first order reaction takes 69.3 minutes f...

A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.

Show egg foams application in food preparation, Q. Show Egg foams applicati...

Q. Show Egg foams application in food preparation? Foams need to be stable if they are to have a role in food preparation. Stability is enhanced if the surface tension is low,

Define heat of combustion, The amount of heat liberated when single mole of...

The amount of heat liberated when single mole of any substance is completely burnt in oxygen is known as heat of combustion H is negative for heat of combustion.

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Why a covalent bond is directional?  Covalent bond is formed as a result of pairing of two electrons in atomic orbitals of two atoms. Bond then must lie along the direction of

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