A solution is prepared by mixing 3.5 g of nitric acid with enough water to make 8.00 L of solution. Find the [H3O+], [OH-], pH and the pOH

convert 3.5g HNO3 to moles.

M=molesHNO3/literstotal

because it all dissociates, then

HNO3>> H+ + NO3-

[H+]= Molarity M

[OH-][H]=10^-14
solve for [OH-]