Question

5. Reaction of iron ore (Fe Os) with carbon monoxide is important in manufacture of t metal. Fe:Os(s) + 3C0(g) 2Fe(s) 3CO(g) When 5.0 moles of Fed) is reacted with i 2.0 moles of Co, 6.7 miles formed. What is the mole % yield of iron metal? of iron metal is a) 75% b) 67% c) 134% d) 56% e) 84% 6. How many mL of a 0.33M solution of HiPOa are required to neutralize 10.0 mL of 1.00M NaOH? a) 10.mL b) 20.mL c) 60.mL d) 30.mL e) 80.mL 7. How many milliliters of 15M HNOs are required to make 50.ml. of 0.10M HNO? a) 1.0mL b) 3.3mL c) 7500mL d) 0.020mL e) 0.33mL 8. Place the following gases in order of increasing average molecular speed at 25 C: Ne, HBr, SO2, NF, CO 9. How many different orbitals can have the principal quantum number n-4? e) 16 b) 18 10. The number of 5d electrons in the electronic configuration of element 77 (Ir) is: a)7 b) 10 d) 5 The maximum number of electrons in an atom that can have the following set of quan numbers is: 1. m/--3, b) 1 n=4, ms =+1/2 a) 0 d) 6 e) 10