What is the percent composition by mass of 64g oxygen in the compound MgSO4 (gram-formula mass = 120. grams per mole)?

Why is the structure of molecule important to its function?

Why is carbon ideal for making different compounds?

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