9. 8. How many significant figures should be reported for the difference between 18.6150 mL and 18.57 ml a) 1 b) d) 2 3 4 What is the best answer to report for (515 x 0.0025)+24.57? 25.858 25.86 a) b) c) 25.8575 d) 26 e) 25.9 10. The correct name for FeO is a) b) iron oxide iron(II) oxide c) iron(III) oxide d) iron monoxide e) iron(I) oxide 1. How many electrons can be contained in all of the orbitals with n=4? a) 2 20 b) 8 c) 10 d) e) 2820 18 32 2. Which of the following has 61 neutrons, 47 protons, and 46 electrons? a) b) c) d) 80 Pm 61 108 Ag 47 108 pd 46 108 Cd 47 10 Ag 47