12g of commercial zinc is made to react with excess dilute H2so4 the total volume of h2 gas was liberated was found to be 4.2 litre of 570mm hg pressure and 279k determine the percentage

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.