Cl2 gas is added to water during the disinfection of drinking water, it hydrolyzes with the water to form hocl. the disinfection power of the acid hocl is 88 times better than its conjugate base, ocl-. the pka for hocl is 7.5what percentage of the total disinfection power (hocl + ocl-) exists in the acid form at ph=6?

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

The answer to the question is d

Answer : option a) 84explanation :

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.