A balloon of helium occupies 11.5 L at 23.0 °C and 755 mmHg. What temperature was it initially, if it occupied 8.75 L and was in a freezer with a pressure of 712 mmHg?

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) .

What is the polyatamic ion of borate

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds