The order of mass of earth (in Kg) is given as then n is close to
25
30
32
33
As we learnt
Mass of earth -
mass of earth
Gravitational constant
- wherein
Use
As
50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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