How many ml of 2m hbr are needed to exactly neutralize 20 ml of 4m koh ?

 = 40 mL

Explanation:

Using the dilution formula;

M1V1 = M2V2

where M1 is the initial concentration, V1 is the initial volume, M2 is the concentration attained while V2 is the new volume.

Therefore;  To get the new volume;

V2 = M1V1/M2

     = ( 20mL × 4 M)/ 2 M

     = 40 mL

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

it takes on an electronical energy