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% ...
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 t...