If 16.0 g of methane is allowed to react with 32.0 g of oxygen, what is the limiting reactant? Explain.
CH4(g) + 202 (g)
CO2 (g) + 2H2O(g)

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.

Select the correct answer from each drop-down menu. to make a table of the elements, dmitri mendeleev sorted the elements according to their . he then split the list of elements into several columns so that elements beside each other had similar .

What is the largest environment on earth?