Complete the tables of value for four aqueous solutions at 25 celcius

There are a total of four parameters you need to know to determine the pH of the solution. The pH and the pOH are negative logarithms of the concentrations of the ions H+ and OH-, respectively. These ions are the solvated ions of in an acid-base reaction. The equations are as follows:

pH = -log [H+]
pOH = -log [OH-]

Lastly, the pH range is from 1 to 14. So, it is easier to remember that pH + pOH is equal to 14. So, we use these three equations for the solutions.

Solution A:
pH = -log(6.4×10^-13) = 12.2
pOH = 14 - 12.2 = 1.8
1.8 = -log[OH-]
[OH-] = 0.016 M

Solution B:
pOH = -log(2.7×10^-10) = 9.6
pH = 14 - 9.6 = 4.4
4.4 = -log[H+]
[H+] = 3.98×10^-5 M

Solution C:
8.11 = -log(H+)
H+ = 7.76×10^-9
pOH = 14 - 8.11 = 5.89
5.89 = -log[OH-]
[OH-] = 1.288×10^-6 M

Solution D:
pH = 14 - 4.73 = 9.27
9.27= -log[H+]
[H+] = 5.37×10^-10 M
4.73 = -log[OH-]
[OH-] = 1.862×10^-5 M

Mass of water is smething that you froma drug test or sum girl ya

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.