molarity and molality !

Question

anonymous · Answer

See there your question is given like:

2g of a Substance is added to water...


Can you tell me what is solute here and what is the solvent here ??

anonymous · Answer

solvent is water and solute is that 2g substance .. correct ?

anonymous · Answer

Yes..

anonymous · Answer

For finding molarity you need number of moles solute..

How will you find number of moles of solute because it is given in 2 grams.. ??

anonymous · Answer

i dont know !

anonymous · Answer

For that there is a formula you will use that..

anonymous · Answer

ah .. that previous one ?

anonymous · Answer

derived from molarity .. ?

anonymous · Answer

$$Number \; Of \; Moles = \frac{Grams \; Present}{Molecular \; Mass \; Of \; that \; Substance}$$

anonymous · Answer

No no that one..

This one I have written above now..

anonymous · Answer

how many formulas are there in this chapter ?

anonymous · Answer

Now let us try to implement this formula on a question so that you can understand it properly.


There are as many formulas as there are hairs on your head..

Ha ha ha..

anonymous · Answer

what if am bald ?? :P

anonymous · Answer

Wait for one second my mummy is calling me..

Have a look on that formula and try to memorize it and understand it as well..

anonymous · Answer

okay !

anonymous · Answer

Then there are as many formulas as there are hairs on my head

And I don't like to be bald..

anonymous · Answer

am not bald either .. i were just kidding :)

anonymous · Answer

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