What do all of these molecules have in common?
a. they store and transfer information.
b. they store energy.
c. they dissolve in water.
d. they are found in living things.

The answer is B) they store energy.
The answer isn't C because there are also molecules in water. The answer isn't D because molecules are not ONLY found in living things, in fact they are found in everything.

The product formed when bao and h2o  react together is                        ba(oh)2that is  bao + h2o = ba(oh)21 mole of    bao    react  1 mole of h2o  to    form  1 mole  of ba(oh)2