How many hydrogen atoms are in 5 molecules of isopropyl alcohol, c3h, o?
5 x (6.02 x 1023)
5
35
35 x (6.02 x 1023)

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.