What is the definition and units of molarity

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?