What is a renewable energy source that is captured using the heat of the Earth? I need quick answers so please answer ASAP.

Ineed with my science work! it’s due tomorrow!

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) .

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?