How many electrons can be placed in the n = 2 and n = 3 shells, combined?

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) .

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

What is the relationship of air masses and the temperature of oceans?