Agree or disagree
The sun and stars move around earth everyday

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

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

The ammonia molecule in the diagram has the observed bond orientation because