Can you plz me with this question? ! question 6

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

How many moles are in 7.2 x 10^23 carbon molecules?