1. What is the volume occupied by each of the following gases at STP? a. 10.0g of H2S)
c. 5.0x102° molecules of BrF($)
b. 15.0mg of SbH3(g)
d. 8.5x10” molecules of B Høg)

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy