What is the mole ratio of H2O to CH4?

Which best describes why nh4+ can form an ionic bond with ci-?

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

Find the mass, in grams, of 5.00*10^23 molecules of f2