QUESTION 4 Calculate the AH for the reaction: C2H40(g) + H2O(1l) –→ C2H6O2(1) given: 2C2H40(g) + 502(g) → 4CO2(g) + 4H2O (1) AH=-2612 kJ C2H602(1) + 5/202(g) → 2C02(g) + 3H2O (1) AH=-1190 kJ
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- Rb₂O(s) +____H₂O(1)→ Co2(CO3)3(s) + heat → 3_H₂O(1) + 1_As2O5(s) →➜ NaClO3(s) + heat → (110q000 sd, opt! 2 H3 As 0, 4 Ini Siyoda canl Mg(s) + H₂SO4(aq) → Myson noileupo unor ton boonstad to out + H₂ Om adami zogasdo neA Moving to the next question prevents changes to this answer. Question 2 Calculate AH for the formation of benzoic acid from its constituent elements 7C(s) + 3H2(g) + O₂(g) → C6H5COOH(s) Given: C6H5COOH(s) + 15/2 O2(g) → 7CO2(g) + 3H₂O(l) C(s) + O2(g) - CO₂(g) H2(g) + O2(g) → H₂O(l) Attach File Browse Local Files AH = -771.2 kcal AH-94.05 kcal AH = -68.32 kcal Moving to the next question prevents changes to this answer. (2) (3)5. Which one of the following equations represents the formation reaction of ethanol, CH3CH2OH (/). (a) 2C(g) + 2H2(g) + 1/202(g) → CH3CH2OH() (b) 2C(g) + 6H(g) + O(g) → CH3CH2OH (1) (c) 2C(graphite) + 6H(g) + O(g)-> CH3CH2OH (/) (d) 2C(diamond)+ 6H(g) + O(g)-> CH3CH2OH() (e) 2C(graphite)+ 3H2(g) + 1/202(g) → CH3CH2OH(/) Select the correct answer:
- * What amount (in mol) and what mass (in kg) of carbon dioxide are produced when 20 gallons (approximately 2.0 x 10' kg) of octane (C3H18) is combusted? C3H18(1) +O2(g) CO2(g) + H;O(1) A: 1.4 x 10°; 62Be sure to answer all parts. Determine Angas for each of the following reactions: (a) MgCO3(s) → MgO(s) + CO2(g) mol (b) 2 H2(g) + O2(g) → 2 H₂O(l) mol (c) HNO3(1) + CIF(g) → CIONO2(g) + HF(g) molWhich reaction has a positive AS? O CaO (s) + CO2 (g) → CaCO3 (s) O N2 (g) + 3H2 (g) – 2NH3 (g) O 2s03 (g) – 2SO2 (g) + 02 (g) O Ag+ (aq) + Cl- (aq) → AgCl (s)
- Given the following reactions: Reaction # 1 2 3 4 Reaction A(s) + 3B(g) → 3C(g) + D(g) 2E(s) + 3F₂(g) → D(g) F₂(g) + C(g) B(1) B(1)→ B(g) →>> ΔΗ 2,046 29 -289 37 Calculate the enthalpy (in kJ) of the following reaction using Hess' Law: 4E(s) + 3C(g) → 2A(s) Round your answer to the nearest kJ.QUESTION 3, a) Find the AH for the reaction below, given the following reactions and subsequent AH values H2SO4(1) → so,(g) + H,O(g) H2S(g) + 2 02(g) → H;SO«(1) H2S(g) + 2 O2(g) → SO3(g) + H2O(I) AH =-235.5 kJ H2O(1) → H2O(g) AH =-207 kJ AH = 44 kJ b) Do you expect the overall reaction to be exothermic or endothermic. Justify your answer. C) Using the answer from part a. Calculate the change in energy if 67,5 g of SO3 was collected during the experiment d)lf the 67.5 grams of SO3 were collected at 31 degrees Celsius, at 2.5 atm, calculate the volume of the collected gas. QUESTION 4. Movable Piston Valve O,(g) a) During an experiment Oxygen gas was collected in a container as shown above. The gas was collected at 25 degrees Celsius and 2.4 atm. The size of the container above is 5.4 Liters. Calculate the density of the gas in g/ml. b) After collecting all the gas, the student pushed down the piston to half of the original Volume and measured the temperature, which remained at 25 degrees…Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C₂ H₂ (-1300. kJ/mol), C2H6 (-1560. kJ/mol), and H₂ (-286 kJ/mol), calculate AH for the reaction ΔΗ = C₂H₂(g) + 2H₂(g) → C₂H6 (9) kJ
- Based on the reactions: 2NO2 (g) + 2N0 (g) + O2 (g) – – > 2N½O4 (g) ; AH = -228.54 kJ 4NO (g) +2N2O (g) + 50, (5) – – > 4N,O4 (g) ; AH,=-488.46 kJ 2NO (g) + O2 (g) – - > N,O4 (g) ; AH3 = –171.34 kJ- Use Hess's Law to calculate AH for: 4N204 (g) - - > 2N½O (g) + 302 (9) + 4NO2 (g)A nutritional calorie (kcal) is equal to 4.184 kJ. A can of Coca Cola contains 39 g of sugars. We will assume those sugars ultimately all get converted to 39 g of glucose (C6H12O6) in the body. Your body uses glucose in cellular respiration according to the following equation: C6H12O6(s) + 602(g) → 6CO2(g) + 6H₂O (1) a. Using enthalpies of formation provided on the reference page, how many kcal are contained in a can of Coca Cola? You can assume that all the calories in the drink are coming from sugar. b. While carbohydrates (like glucose) and protein provide about 4 nutritional calories per gram consumed, fats (lipids) provide about 9 nutritional calories per gram consumed. What does this tell you about the enthalpy of the reactions that consume fats compared to the enthalpy you determined above for the consumption of glucose?Write a balanced chemical equation based on the following description: butanoic acid, C,H;COOH(I) burns in air C,H,COOH(I) + 5 0,(g) → 4 CO;(g) + 4 Hz0(1) O2+ 3+ 04- 2. O4+ 1 4. 8. 6. 02 O3 O5 O6 O8 09 (s) (1) (g) (aq) %3D C. OX H. H. Reset Delete w/ 口 3. 2.