O c. -147.7 J/KO d. 147.7 J/KO e. 310.1 J/KQUESTION 18Natural gas, or methane, is an important fuel. Combustion of 2 moles of methane releases 1605 kilojoules of energy. How much energy does that represent inkilocalories(1 cal 4.184 J).%3Da.3.36 x 10° kcalOb.1.92 x 10 kcal3.84 x 102 kcalO d.3.36 x 10 kcalOe.1.92 x 10- kcalClick Save and Submit to save and submit. Click Save All Answers to save all answers.B88%2324367.4R.ab

Given that, 2 moles of methane releases energy in Kilojoules = 1605 KJ

QUESTION 18 Natural gas, or methane, is an important fuel. Combustion of 2 moles of methane releases 1605 kilojoules of energy. How much energy does that represent in kilocalories (1 cal 4.184 J). Oa. 3.36 x 106 kcal Ob. 1.92 x 10 kçal Oc. 3.84 x 102 kcal d. 3.36 x 10 kcal Oe. 1.92 x 10- kcal Click Save and Submit to save and submit. Click Save All Answers to save all answers.

QUESTION 18 Natural gas, or methane, is an important fuel. Combustion of 2 moles of methane releases 1605 kilojoules of energy. How much energy does that represent in kilocalories (1 cal 4.184 J). Oa. 3.36 x 106 kcal Ob. 1.92 x 10 kçal Oc. 3.84 x 102 kcal d. 3.36 x 10 kcal Oe. 1.92 x 10- kcal Click Save and Submit to save and submit. Click Save All Answers to save all answers.

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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Calculate the amount of heat needed to raise the temperature of 10g of aluminum from 100°C to 115°C. The specific heat of aluminum is 0.9025J/g.°C. a. 135.38J b. -4513J C. 45.13J d. 45.13°C
Consider a hypothetical chemical reaction: A+B → C+D (In this equation A, B, C and D stand for some unknown chemical formulas.) Here is an energy diagram for the reaction: energy (kJ/mol) 400 300- 200- 100. 0 A+B C + D reaction coordinate Use the energy diagram to answer these questions. What is the heat of reaction? Is the reaction exothermic or endothermic? Are the reactants (A+B) or the products (C+D) more chemically stable? kJ/mol O Exothermic Endothermic Neither Reactants (4+B) O Products (C+D) Neither
A sample of 175°C copper is placed into a beaker with 100 grams of 25°C water. Which sample of copper will heat the water to the lowest final temperature? The specific heat of copper is 0.385 J-g-1.°C-1. The specific heat of water is 4.184 J·g-1.°C-1. A. 5.0 g Cu B. 2.0 g Cu C. 0.5 g Cu D. 1.0 g Cu
1. A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as the reaction proceeds. Is this reaction endothermic or exothermic? Describe if heat energy is lost or gained from the reaction (the system) to the surroundings. What is the sign of the enthalpy change (AH) of this reaction? 2. A student performs a reaction and determines the enthalpy change (AH) to be 31.4 kJ. Will the temperature of the surrounding solution increase or decrease as a result of this chemical process? 3. If you hold 3 grams of ice in your hand at room temperature, your hand will become cold. a) Is the reaction H,O(s) – H,O(1) endothermic or exothermic? b) In which direction does heat flow?
A 50.0-g piece of metal at 80.0 °C is placed in 100 g of water at 22.0 °C contained in a calorimeter like that shown in Figure 5.12. The metal and water come to the same temperature at 24.6 °C. Water has a heat capacity of 4.18 J/g°C. a. How much heat did the metal give up to the water? b. What is the specific heat capacity of the metal? c. If it is one of the substances found in Table 5.1, what is its likely identity?
* 00 Σ In your own words, differentiate between an endothermic and exothermic reaction in one complete sentence. $ 4 9. Ə p alt