Que es mayor 0.31 o 1.21

What does x represent in the formula for the compound xcl4?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

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