A sample of potassium chlorate (15.0 g) is dissolved in 201 g of water at 70 C with precautions taken to avoid evaporation of any water. The solution is cooled at 30 C and no precipitate is observed. This solution is

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