0.2010 g of a diprotic acid is dissolved in 30. mL water. The diprotic acid solution requires 10.07 mL of a 0.1090 M NaOH titrant solution to reach the endpoint. Calculate the molar mass of the acid. Watch significant figures.

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?