Using the balanced chemical equation CaCl2(aq) - K2CO3(aq) -- CaCO3(s) + 2Cl(09)
determine the concentration of a calcium chloride solution if 20.0 mL reacts with excess aqueous potassium carbonate to form 10.09
of solid calcium carbonate,

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.