Fill in the Blanks Type your answers in all of the blanks and submit For the following reaction at constant temperature and pressure AH CH,(g) +20,(g) → Co,(g) + 2 H,0(1) Based on this information fill in the blanks below. Be sure to include the sign of the entity in your answers. reaction =-802.3 kJ/mole. a. Is this reaction endothermic or exothermic? Type your answer here (Enter endothermic or exothermic.)

Fill in the Blanks Type your answers in all of the blanks and submit For the following reaction at constant temperature and pressure AH CH,(g) +20,(g) → Co,(g) + 2 H,0(1) Based on this information fill in the blanks below. Be sure to include the sign of the entity in your answers. reaction =-802.3 kJ/mole. a. Is this reaction endothermic or exothermic? Type your answer here (Enter endothermic or exothermic.)

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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Please answer question 20 part A
A chemist measures the energy change AH during the following reaction: 2 Fe,03(5) → 4 Fe(5)+O,(g) AH=560. kJ Use the information to answer the following question. Suppose 49.9 g of Fe,0, react. Calculate how much heat will be released or absorbed. ? Round your answer to 3 significant digits.
A chemist measures the energy change AH during the following reaction: Cl₂(g) + H₂(g) → 2 HC1 (g) AH=184. kJ Use the information to answer the following questions. endothermic. This reaction is... 0 exothermic. Suppose 28.0 g of Cl₂ react. Yes, absorbed. Yes, released. Will any heat be released or absorbed? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3 significant digits. ☐kJ x10 X ?
When HCI(g) reacts with O₂(g) according to the following reaction, 28.6 kJ of energy are evolved for each mole of HCI(g) that reacts. Complete the following thermochemical equation. 4HCI(g) + O₂(g)2H₂O(g) + 2Cl₂(g) ΔΗ = 28.6| kj
pt pt pt pt pt pt pt pt pt pt pt pt pt pt You should use care when dissolving H₂SO4 in water because the process is highly exothermic. To measure the enthalpy change, 5.8 g of concentrated H₂SO4() was added (with stirring) to 140. g of water in a coffee-cup calorimeter. This resulted in an increase in temperature from 21.0 °C to 30.3 °C. Calculate the enthalpy change for the process H₂SO4(l) → H₂SO4 (aq), in kJ/mol. Assume the specific heat capacity of the solution is 4.2 J/g. K. Enthalpy change = kJ/mol ?
8. A sample of ethanol, C₂H5OH, absorbs 23.4 kJ of energy. The temperature of the sample increases from 5.6°C to 19.8°C. What is the moles (n) of ethanol in the sample? The specific heat capacity of ethanol is 2.46 J/g.°C. [3 Moles of ethanol in the sample is:
Please don't provide handwriting solutions....
According to the following thermochemical equation, what mass of C3H18 (in g) must react in order to produce 345 kJ of energy? Assume excess O2. The molar mass of octane (C3H18 ) is 114.33 g/mol. 2 C3H18 + 25 O2 - 16 CO2 + 18 H2O AH°rxn = -11018 kJ Units don't need to be typed in the answer. Answer:
Consider the balanced reaction 4 A + 9 B → 8 C + 8 D and the enthalpies of formation provided in the table below. AH Compound (kJ/mol) A 170.8 231.1 D -98.4 Suppose that the AH of the overall reaction is -2,029.3 kJ/molxn. Calculate the value of the AHf of C in kJ/mol. Report your answer to three decimal places (ignore significant figures).
A chemist measures the energy change AH during the following reaction: Cl2(9)+ H2(g) →2 HCl (g) AH=-184. kJ Use the information to answer the following question. Suppose 62.9 g of Cl₂ react. Calculate how much heat will be released or absorbed. ? g0 ☐ x10 EX OkJ olo Be sure your answer has the correct number of significant digits. Ar B >
A chemist measures the energy change AH during the following reaction: 2 NO,(9) → N,O4(9) AH=-55.3 kJ Use the information to answer the following questions. O endothermic. This reaction is... O exothermic. Suppose 82.9 g of NO, react. O Yes, absorbed. O Yes, released. Will any heat be released or absorbed? O No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3 significant digits. Explanation Check 02021 McGraw Hill LLC. Al Rights Reserved