How many moles of silver atoms are in 1.8 x 1020 atoms of silver?

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) .

Compare and contrast physical changes with chemical changes.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?