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% ...
All humans, animals, birds, trees, and other living organisms have shadow's. Even non living Things have shadows. 
A lot of people's dont know about that. But we must know that, because everyday we see our shadow's, other people's shadow's, sometime we play with shadows, by making birds, animals shadows by using our hands. sometimes we create scary
DO YOU KNOW HOW WE CAN DO THAT ?
We can do that because, our body is massive and solid but not transparent. Transparent things have no shadows. Things have shadow's totally apposite to the direction of light sources. Size of shadows change with position of light sources. We can see that in the images.
Living organisms have shadows because, when light radiations incident on humans body they can't cross body .some of that light radiations absorbe our body and some of them reflect in different directions. That is why our body shape area remains as it is,
in the form of shadow. Same things happens In case of non living things.
You can see, sometimes shadow's becomes dark and sometimes faint. Shadows becomes faint while sunshining. Because sun is big source of light, it's area covering capacity and reflection media is large. So it decreases the intensity of shadows while shining.
Intensity of morning shadows are less than evening shadows. Because up to the evening, light intensity of sun decrease .
means it's area covering capacity and reflection media decrease.
In the night's, shadows becomes to much dark. because light source which we are using is
very less powerful than sun .it's area covering capacity is very less. That is why shadows becomes dark in night.
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