If 2.5 moles of Al react with 2.1 moles oxygen, what is the limiting reagent?

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

If this sedimentary rock layer is truly the oldest one of marine origin, what do you think that tells usabout the formation of earth's oceans?