In a chemical reaction, 31.1 moles of H2 gas are produced. How many moles of H3PO4 reacted?
2 Cr(s) + 2 H3PO4(aq) + 3 H2(g) + 2 CrPO4(s)
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the dissolution of polymer can be thermodynamically described in 2 steps.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

i wish i could but this one is weird give me abc and i can solve it.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.