Answer:
the last one(26 by 22) not sure whether its D or E but yah
Step-by-step explanation:
Answer:
The concentration of hydrogen ions in moles per liter (M) is 
Step-by-step explanation:
As we know
The hydrogen ion concentration of any solution at pH is given by

Substituting the given values in above equation, we get -
mol/l
The concentration of hydrogen ions in moles per liter (M) is 
8.5/12=0.708333 1 hour=60 minuets 60x0.708333= 42.5 or 42 1/2 miles
Step-by-step explanation:
7+y
since y is unknown the value is not known
121 is a Rational number .