= MULTIPLE CHOICE QUESTION
How much heat (energy) in joules (J) is required
to raise the temperature of 3 grams of aluminum
one degree Celsius?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

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