In order to produce CO2, a student put a sample of calcium carbonate in a flask and added hydrochloric acid using the following equation: CaCO3 + 2HCl → H2O + CO2 + CaCl2

The student finds the mass of CO2 generated in the lab to be 100 g. If the student began with 200 g of HCl and excess CaCO3 , what was the percent yield of CO2 ?

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.