The molar mass of o2 is 32.00 g/mol. how many moles of hgo are needed to produce 250.0 g of o2?

the moles would be 7.8125

divide 250g/32g/mol= 7.8125

Its a 1 to 1 mole ratio between O2 and HgO so they are the same number of moles.

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.      

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.