A.meter is the is the answer to the problem you and and if you need to know why then type back
Answer:
13-b
Explanation:
because 13-b is close to a and 12
The first step is calculating the number of HCl moles. The molar mass of HCl is AH+ACl which is 1+35,5=36,5 g/mole. The formula for the pH is -lg[H+] where [H+] is the molar concentration of protons in the solution. To find the molar concentration we need to divide the number of moles by the volume(L).
We get the number of moles by dividing the mass given in the problem to the molar mass of the compound.1.825/36.5=0.05 moles of HCl so 0.05 moles of
H+.Molarity=n/V=0.05/0.25=0.2moles/liter.The pH is -lg0.2=2.321.
Half life is defined as the time when the final concentration reduced to half of the initial value.
Thus, for first half life, the remaining percentage of the reactant is 50 percent that is 
Now, for second half life, the remaining percentage will be 50 percent of the remaining 50 percentage that is
or 
Thus, general formula for n half lives =
Now, 98.4 years is equal to eighth times 12.3 years that is
=
remaining material.
Therefore, mass of the nuclide will remain after 98.4 years= 
= 
Mass of remaining nuclide after 98.4 years = 
Answer:
The anwser is always Jesus.
Explanation:
Things can only go downhill from here