Write the equilibrium expression for \( 2 \mathrm{NO}(\mathrm{g})+2 \mathrm{H} 2(\mathrm{~g})=\mathrm{N} 2(\mathrm{~g})+2 \mathrm{H} 2 \mathrm{O}(\mathrm{g}) \) \( \mathrm{Kc}=[\mathrm{NO}] 2[\mathrm{H} 2] 2 /[\mathrm{H} 2 \mathrm{O}] 2[\mathrm{~N} 2] \) \( \mathrm{Kc}=[\mathrm{H} 2 \mathrm{O}] 2[\mathrm{~N} 2] /[\mathrm{NO}] 2[\mathrm{H} 2] 2 \) \( \mathrm{Kc}=[\mathrm{N} 2] /[\mathrm{NO}] 2[\mathrm{H} 2] 2 \)

6. How does the ground state electron configuration of the hydrogen atom differ from that of a ground state helium atom? a. Hydrogen has one electron in a higher energy level. b. Hydrogen has two electrons in a lower energy level. \( \begin{array}{l}\text { c. Hydrogen contains a half-filled orbital. } \\ \text { d. Hydrogen contains a completely filled orbital. }\end{array} \) \( \begin{array}{l}\text { 7. Which electron configuration represents an atom in an excited state? } \\ \begin{array}{ll}\text { a. } 1 s^{2} 2 s^{2} 2 p^{6} & \text { c. } 1 s^{2} 2 s^{2} 2 p^{5} \\ \text { b. } 1 s^{2} 2 s^{2} 2 p^{5} 3 s^{1} & \text { d. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}\end{array} \\ \begin{array}{ll}\text { 8. Which of the following represents an impossible electron configuration? } \\ \begin{array}{ll}\text { a. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5} & \text { c. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{3} 3 p^{6} 4 s^{2} 3 d^{2}\end{array} \\ \text { b. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1} & \text { d. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}\end{array}\end{array} \).

b) Write structural formulae for the following compounds (i) \( 2,3,3,4 \) - tetra methyl pent - 1 - ene (ii) Tetralodo methane (iii) 2,5, di methyl hexane (iv) Heptane (v) Pent- 2 - yne

X. (a) Write the systematic names for the following: (i) \( \mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{CH}_{3}\right)-\mathrm{CH}_{2}\left(\mathrm{CH}_{3}\right) \mathrm{CH}_{2} \mathrm{CH}_{3} \) (ii) \( \mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{C}_{2} \mathrm{H}_{5}\right) \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Cl} \) (iii) \( \mathrm{CH}_{3} \mathrm{C}\left(\mathrm{CH}_{3}\right)=\mathrm{CH}_{2} \) (iv) \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{C}=\mathrm{CCH}_{2} \mathrm{CH}_{3} \) (v) \( \mathrm{CHBr}_{3} \)

Write the systematic name for \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{C} \equiv \mathrm{CCH}_{2} \mathrm{CH}_{3} \)

D) 22.5 g ¿Cuántos gramos hay en 0.750 moles de glucosa y en 1.5 moles de anhidrido carbónico? A) 180 g y 44 g B) 360 g y 88 g C) 135 g y 66 g D) \( 6.022 \times 10^{-23} \) y \( 3.011 \times 10^{-23} \)