If the pOH of a nitric acid (HNO3) solution is measured as 11, what is the concentration of HNO3 solution? 2 × 10-3 M
1 × 10-3 M
1 × 10-11 M
3 × 10-3 M

1 gram of HNO3 will be equal to 1/63.01 moles. Therefore, we can say that 1 liter of Nitric acid contains 15.6976 moles or in other words molarity of 70% (w/w) Nitric acid is equal to 15.6976 M.

Known values  

Molecular weight of HNO363.01 g/mole

Concentration of Nitric acid70% (% by mass, wt/wt)

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be