Chemists measure the acidity of an aqueous solution using ph. the ph is ph=-log-10[h^+] where ph is a measure of hydrogen ion concentration [h^+] measured in moles of hydrogen per liter of a solution. find the ph of a solution if [h^+]=5.5x10^-12.

11.26

Step-by-step explanation:

pH = - log(H+ concentration)

[H^+] = 5.5 * 10^(-12)

pH = - log(5.5*10^-12)

pH = - (-11.26)

pH = 11.26

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square