You can prepare a buffer solution by combining equal moles of which pair of substances? a. weak acid and its conjugate base b. strong acid and a strong base c. strong base and its conjugate acid d. salt and a weak acid

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.