How many moles of helium are needed to fill a balloon to a volume of 7.9 L at 23.2 ℃ and 215.4 mmHg?

Iwill give extra points to who gets this right

The p sub shell can hold up to 8 electrons in an atom. true or false?

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .