Referring to the chart of electronegativity values (see pic), determine the approximate value of the percent ionic character for the following bonds, and identify the bond as ionic, polar covalent, or no polar covalent. a. I-I

b. K-Cl

c. Ca-O

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.