Calculate the heat energy required to raise the temperature
of 5.0 g of ice by 5.0 °C. The
specific heat of ice is
approximately 2.1 J/g • °C. Hint:
Q = mc AT

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