6. Liquid nitrogen boils at a temperature of –196 °C. This temperature in kelvin is: a. –469 b. 77 c. –77 d. 469 e. –321 7. A cube measures 4.0 x 10–4furlongs on each side. Calculate the volume of this cube in cm3. 1 furlong = 2.0 x 104cm. (A furlong is a distance unit used in horse racing. )
3 8. From the list below, which is the mostmetallic. 9. The elements in Group 8A are known as the 10. All formulas of ionic compounds are empirical formulas because a. ionic compounds are made up of different types of molecules. b. ionic compounds ionize. c. ionic compounds are composed of individual neutral atoms. d. ionic compounds are soluble in water. e. ionic compounds do not contain molecules. 11. An atom of 57140Lacontains 12. The total number of electrons in the ion N3–is
4 13. Of the following compounds, which should be covalent (molecular)?