ducation.com/flow/connect.html(Thermochemistry: Energy FL..iSaved2 attempts leftCheck my workBe sure to answer all parts.Isooctane (C3H18; d=0.692 g/mL) is used as the fuel during a test of a new automobile engine.How much energy (in kJ) is released by complete combustion of 24.8 gal of isooctane to gases(AH=-5.44 x 10 kJ/mol)? Enter your answer in scientific notation.-3.09< Prev23 of 25Next >arch99+DELL

Volume of isooctane (in Litres) is calculated as follows, Mass of isooctane is calculated as…

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Consider the hypothetical thermochemical equation 3 A + B → 2 C for which AH = 63.1 kJ/mol. Which one of the following reactions would have an enthalpy change of -2×AH? Here, AH refers to the enthalpy change of the original reaction. А) С — 3/2 А + 1/2 В B) 6 A + 2 B –→ 4 C С) 3/2 А + 1/2 В — С D) 4 C → 6 A + 2 B
6H2O(l) + 6CO2(g) → C6H12O6(s) + 6O2(g) ΔH = +2803 kJ/mol Calculate the solar energy required to produce 7.9 ×103 g of C6H12O6. put you answer in KJ and scientific notation
10:23 PM Thu May 25 < G car wallpaper ipad - Goog... = THERMOCHEMISTRY G when will stranger things... Understanding the definitions of heat and work AA Is the reaction exothermic or endothermic? Does the temperature of the water bath go up or down? Does the piston move in or out? A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) From previous experiments, this chemical reaction is known to release 331. kJ of energy. Does the gas mixture do work, or is work done on it? Explanation The temperature of the water bath is monitored, and it is determined from this data that 223. kJ of heat flows out of the system during the reaction. How much work is done on (or by) the gas mixture? Round your answer to 3 significant digits. Check…
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9:17 Question 14.f of 40 In welding, the temperature of the flame produced by the combustion of acetylene and oxygen varies based on the balance of the two gases in the reaction. The heat is used to melt metal so that pieces of metal can be joined together. ..lLTE An oxidizing flame (excess oxygen) is used to cut through metal. The temperature of an oxidizing flame is typically around 6692 °F. What is this temperature in K? Report your answer to four significant figures. K 1 4 7 +/- Tap here or pull up for additional resources 2 3 5 6 8 9 O Submit X x 100
MISSED THIS? Read Section 7.6 (Pages 281- 284), Watch IWE 7.7 View Available Hint(s) Nitromethane (CH,NO2) burns in air to produce significant amounts of heat via the following reaction Hint 1. Calculate the number of moles of nitromethane 2CH,NO, (1) +O2(g)→ 2CO2(g) +3H,O(1) + N2(g) The value of AH is related to the balanced chemical equation by the number of moles of nitromethane. Calculate the number of moles of nitromethane in a 2.73-kg sample. AHn -1418 kJ Express your answer in moles. mol CH, NO2 44.72 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Convert the mass of nitromethane from kg to g. Then use the molar mass of nitromethane as a conversion factor to obtain a value in mol HA Value Units = b
When burning 0.25 g of CH3OH in a calorimeter bomb with a heat capacity of 1.50 kJ / 0C, it increases the temperature of the calorimeter bomb by 0.45 0C. How many kg of CH3OH (methyl alcohol) should be burned to obtain 2.76x105 kJ of heat? (CH3OH = 32 g / mol)
Please fill in the four blanks. Thank you!
thermometer A 50.6 g sample of aluminum, which has a specific heat capacity of 0.897 J•g right) that contains 250.0 g of water. The temperature of the water starts off at 22.0 °C. When the temperature of the water stops changing it's 25.0 °C. The pressure remains constant at 1 atm. -1.°C 1 is put into a calorimeter (see sketch at insulated container water Calculate the initial temperature of the aluminum sample. Be sure your answer is rounded to the correct number of significant digits. sample- a calorimeter
A student runs two experiments with a constant-volume "bomb" calorimeter containing 1100. g of water (see sketch at right). thermometer stirrer First, a 5.500 g tablet of benzoic acid (C,H,CO, H) is put into the "bomb" and burned completely in an excess of water oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed insulation to rise from 15.00 °C to 42.56 °C over a time of 10.3 minutes. Next, 5.720 g of acetaldehyde (C2H,O} are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 15.00 °C to 40.53 °C. chemical reaction "bomb" Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: A "bomb" calorimeter. 2C,H,0(g) + 50, (g) 4CO, (g) + 4H,0 (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note…
Apps MyUSU Outlook Canvas Labflow OneNote 101 Chem101 Tophat U USU Tutoring Question 9 of 19 What quantity of heat (in kJ) is absorbed in the process of making 0.957 mol of CF from the following reaction? C (s) + 2 F, (g) → CF, (g) AH° = 141.3 kJ/mol 4. %3D
2 C,H,0(g) + 50,(8) 4 CO2(g) + 4 H,0(g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. exothermic Is this reaction exothermic, endothermic, or neither? endothermic O neither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in the second experiment. kJ kJ Calculate the reaction enthalpy AH, per mole of C,H¸0. rxn mol

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