If ammonia were formed from daltons simplest formula of one atom of each element what would he have concluded about the relative masses of nitrogen and hydrogen atoms?

What is the percent by mass of oxygen in fe2o3

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

What is a difference between a mixture of elements and a mixture of compounds