What is the difference between exothermic and endothermic process/reaction?

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) .

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

The graph shows one consequence of urban sprawl. how did urban sprawl contribute to the change in biodiversity