(Solved): Help me solve. Show all your work. (6 poinas) 1. A sample of ascorbic acid (vitamin C) contains: \( ...

(6 poinas) 1. A sample of ascorbic acid (vitamin C) contains: \( 40.92 \mathrm{~g} \) of \( \mathrm{C}, 4.58 \mathrm{~g} \) of \( \mathrm{H} \) and \( 54.51 \mathrm{~g} \) of \( \mathrm{O} \). Detemine the empirical formula for ascorbic acid. (2 poine) 2. The molar mass for ascorbic acid is \( 176.1 \) g/mol. Determine the molecular formula for ascorbic acid. (S poines) 3. A balloon filled with air occupies a volume of \( 859 \mathrm{~mL} \) at \( 7 \mathrm{C} \). The balloon is left in the sun and its volume increases to \( 912 \mathrm{~mL} \) : what is the temperature of the air in the balloon left in the sun in \( { }^{\circ} \mathrm{C} \) ? (Give your final answer with 2 significant figures) (o point 4. Balance the following chemical equations. a) \( \mathrm{AlCl}_{2}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{HCl} \) b) \( \mathrm{C}_{6} \mathrm{H}_{12}+\mathrm{O}_{2} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{3} \mathrm{O}_{4}+\mathrm{H}_{2} \mathrm{O} \) c) \( \mathrm{CH}_{3} \mathrm{NH}_{2}+\mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{N}_{2} \) (d poined) 5. \( \mathrm{CCl}_{4}, \mathrm{CBr}_{4} \) and \( \mathrm{CH}_{4} \) are three tetrahedral and non-polar molecules. a) What type of intermolecular force is present in these molecules? b) At room temperature one of the three molecules is a liquid, one is a solid and one is a gas. Determine the state of matter (solid, liquid, or gas) of \( \mathrm{CCL}_{4}, \mathrm{CBr}_{4} \) and \( \mathrm{CH}_{4} \) at room temperature. CBra: CCle: CH4: Explain your answers. 6. Explain why the boiling point for \( \mathrm{H}_{2} \mathrm{~S} \) is much lower than the boiling point for water: 8 pointw) 7. Consider the following balanced reaction (propane burning): \[ \mathrm{C}_{3} \mathrm{H}_{3}+5 \mathrm{O}_{2} \longrightarrow 3 \mathrm{CO}_{2}+4 \mathrm{H}_{2} \mathrm{O} \] \( 11.1 \) grams of \( \mathrm{C}_{3} \mathrm{H}_{8} \) react with \( 22.2 \) grams of \( \mathrm{O}_{2} \). a) Determine which reactant is the limiting reactant. b) Calculate how many grams of \( \mathrm{CO}_{2} \) and \( \mathrm{H}_{2} \mathrm{O} \) are formed. \[ \mathrm{C}_{3} \mathrm{H}_{8}+5 \mathrm{O}_{2} \longrightarrow 3 \mathrm{CO}_{2}+4 \mathrm{H}_{2} \mathrm{O} \] 11.1. \( 22.28 \) g b. Limiting reactant: (S poined 8. Write the Lewis structure for \( \mathrm{C}_{3} \mathrm{Cl}_{4} \) (similar strueture as \( \mathrm{C}_{2} \mathrm{H}_{4} \) ). Determine electron and molecular geometries around one of the carbon atoms. Electron geometry. Molecular geometry. (5 pointa) 9. How many molecules are there in \( 1.24 \times 10^{-4} \) grams of \( \mathrm{SO}_{2} \) ? Show all work. Circle your answer. (4 poiner) 10. \( 55.5 \mathrm{~mL} \). of a \( 3.33 \mathrm{M} \mathrm{KMnO} \) solution is diluted with water to \( 0.500 \mathrm{~L} \). What is the concentration of the resulting \( \mathrm{KMnO}_{4} \) solution in molL? 11. Identify each of the following organis molecules as an alkane, alkenc, alkyne, alcohol, ether, ketone, carboxylic acid, or aminc. \[ \begin{array}{l} \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{NH}-\mathrm{CH}_{3} \\ \mathrm{CH}_{3}-\mathrm{C}=\mathrm{C}-\mathrm{C}_{2} \mathrm{H}_{3} \\ \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{O}-\mathrm{CH}_{3} \\ \mathrm{CH}_{3}-\mathrm{CH}_{3}-\mathrm{CH}_{3} \\ \mathrm{CH}_{2}-\mathrm{OH} \\ \mathrm{O}=\mathrm{C}_{2}-\mathrm{C}_{2} \mathrm{H}_{5} \\ \mathrm{OH} \end{array} \] 12. Write the electron configuration for tin (Sn). How many valence electrons does it have? 13. Calculate \( \left[\mathrm{H}_{3} \mathrm{O}^{\prime}\right] \) and \( [\mathrm{OH}] \) for a solution of \( \mathrm{pH}=4.45 \). inw) 14. A flask contains \( 364 \mathrm{~g} \) of mereury (Hg). How many gallons of mercury is this? The density of mereury is \( 13.6 \mathrm{~g} / \mathrm{mL} \). Show all work. Circle your answer. 15. In the following list, circle the diatomic elements: He O I P N F S Cl 16. What is the chemical formula for each the following compounds: 1) Calcium phosphate: 2) Sodium bicarbonate: 3) Chromium(III) oxide: 17. Name the following compounds: 1) \( \mathrm{FeCl}_{3} ; \) 2) \( \mathrm{Na}_{2} \mathrm{~S} ; \) 3) \( \mathrm{SO}_{2} ; \) 4) \( \mathrm{P}_{2} \mathrm{O}_{5} ; \) 5) \( \mathrm{K}_{2} \mathrm{CO}_{3} \).