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How to make 1N and 1M H2SO4 ?

Now let's see how to make 1 N and 1M  H2SO4 from 98% concentrated H2SO4 . This calculation varies with concentration of H2SO4. Because density varies with concentration of H2SO4 . Now we are having density 1.84 for 98% concentrated H2SO4.  If you are going to use less concentrated H2SO4 then first find out density of it then put that value in below formula instead of 1.84 H2SO4 is liquid, so at first we need to convert H2SO4 molecular weight (gm) into volume (ml) let's use formula density = mass / volume volume = mass of HCl  / density                             98.08 / 1.84 V = 53.30 ml Here we are making 1M and 1N  H2SO4 from 98% concentrated H2SO4. If you are going to use less concentrated H2SO4 then use that percentage value in below formula rather than 98%. Let's use formula  1M H2SO4 (98%) =  53.30 ml [ V ]                100%    ...
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the facts behind black and white colours

        In the dark, we can't see anything without light. Because there is no any source  of light .

                              

       
     If there is no source of light, it means - no light incident  on the object  -no absorption  of light or no reflection  of light.
           



            
   But when we turn on the torch ,suddenly absorption and reflection of light appears within some seconds and visibility appears. Then some objects look  completely dark and some of them look  completely white and some of them look colorful. It exactly same like day and night. Torch on means day ,torch off means night.
        
  
Some objects look completely black because, they absorbs all the radiation which incident on them.
 Means there is no reflection of any colours, that is how they look  black.

        
some objects  reflect all colours means there is no absorption  of colours. Just reflection occurs.








 That all reflected colours incident  on  Retina of our eyes and white image create  in our mind.You can see in above 
image that the paper which is behind the remote is completely white but remote is completely black. Because the material which has been used in making of remote absorbing all radiations 
or light coming from the sun. and completely apposite the paper which is behind the remote reflecting all that radiations or light coming from the sun.




















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