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Chem 1B Thermochemistry/Thermodynamics Activity Name: 1) Do the following conversions. a) 345 calà J b) 233...
Homework Thermochemistry Name: 1. Calculate the mass of O2 that is produced by photosynthesis when 2.49 x 10° kJ of solar energy is consumed by the following reaction: 6 H20 (1) + 6 CO2 (g) C6H12O6 (s) + 6 O2 (g) ; AH = 2803 kJ 2. Given the following thermochemical equation, what amount of energy is absorbed/given off when 255 g of Cu20 is reacted. 2 Cu20 (s) 4 Cu (s) + O2(g) ; AH = 333.8 kJ 3....
CHEM 224 Organic Chemistry II Name AROMATICITY & NOMENCLATURE OF AROMATICS 1. Rank the following in order of increasing stability: M N . 2. Determine which compounds are aromatic (A), antiaromatic (AA), or nonaromatic (NA); ooooo À DOO
Thermochemistry - Prelab Name: 1. Classify each of the following transformations as exothermic or endothermic (a) Combustion of natural gas (CH): (b) Sublimation of solid CO2: (c) Freezing of H2O in a pond: 2. An exothermic reaction occurs within a solution in a calorimeter. Which of the following statements is correct? (Circle your choice) 4ren > while son < 0 Gren > O while soin > 0 Arun Arun while son > soin < 0 while 3. A 5.0 g...
Homework Thermochemistry Name: 1. Calculate the mass of O that is produced by photosynthesis when 2.49 x 109 kJ of solar energy is consumed by the following reaction: 6 H20 (1) + 6 CO2 (g) - C&H 20(s) + 6 02 (g) ; AH-2803 kJ 2. Given the following thermochemical equation, what amount of energy is absorbed/given off when 255 g of CuO is reacted. 2 Cu20 (s) - 4 Cu (s) + O2(g) : AH = 333.8 kJ 3....
CHEM QUESTIONS PLEASE ANSWER CORRECTLY !! AND EXAMPLE HOW TO DO IT 1.Classify each of the following as a chemical change or physical change: burning gasoline, making ice cubes, boiling oil, melting lead, rusting iron, making ammonia from nitrogen and hydrogen, digesting food 2. how many grams are in the following? a. 1kg b.1mg 3. make the following conversions a. 42.6 kg to L B . 1.62 lb to g c.34 in to cm d.37.2 km to mi e.2.73 gal...
Chem 233 Exam III (A) October 28, 2019 Page 7 14. Which of the following would an of the following would be the best base for performing the following elimination? A KOCHA B. KOCH(CH) C. KOC(CH.) D. this reaction is not an elimination reaction 15. Which of the following statements is (are) true of Sul reactions of alkyl halides in general? A) The rate of an SNI reaction depends on the concentration of the alkyl halide. B) The rate of...
Thermochemistry Experiment 3 Name: PRELAB QUESTIONS 1. Based on the notion of weak and strong acids and bases, which of the following three reactions would you expect to produce the largest (most negative) AH neut? The smallest AH neut? A) HCl(aq) + NaOH(aq) → B) NH-OH(aq) + HC2H2O2(aq) → C) NH4OH(aq) + HNO3(aq) → (continued on next page)
Chem 2323 Org I Homework #15 H2SU2020 1. Following the IUPAC nomenclature rules, name the following compounds. b. ОН Br NH2 d. is b. c. d.
12) Name the following compounds (3 points each) A) B) Br COOH C) 13) Do the following conversions (3 points each) A) OCH3 1) DIBAL, -78 °C 2) H20 B) CN 1) leq. DIBAL, -78 °C 2) H20 1) 2eq. DIBAL, -78 °C C) -CN 2) H20 1.03 D) 2) (CH3)2S
Physical Chemistry: Thermodynamics
Name: 1. Consider a hypothetical gas that obeys the following relations: (ан) cT Here, a, b and c are constants. a) Determine an expression for the absolute entropy of the b) Determine an expression for the change in the Helmholtz free energy A for an isothermal expansion of this gas from some Vs to V2