Calculate the oh for a solution that is ph 6.47

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

What is the density of the black hole

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2