please help greatly appreciated..
please help greatly appreciated.. Is the following reaction endothermic or exothermic ? CH4 (g) + O2...
Is the following reaction endothermic or exothermic? please help will greatly appreciate Is the following reaction endothermic or exothermic ? CH4 (g) + O2 (g) + CO2(g) + H20 (g) + energy endothermic, energy is given off by the reaction AH = (+) value exothermic, energy is absorbed by the reaction exothermic, energy is given off by the reaction endothermic, energy is absorbed by the reaction
Question 10 Is the following reaction endothermic or exothermic? AH (-) value CH4 (8)02(8)- CO2 (8) H20 (8) + energy o endothermic, energy is given off by the reaction e exothermic. energy is absorbed by the reaction o exothermic, energy is given off by the reaction o endothermic, energy is absorbed by the reaction
4 H2(g) + CO2(g) → CH4(g) + 2 H20(g) AH=-165 kJ a. Is the reaction endothermic or exothermic? exothermic b. How many kJ of heat are released when 5.0 moles of CO2 react with excess H2? 3300 number not words.) c. How many kJ of heat are liberated when 12.9 g of H2 react with excess CO2? 264 (Enter a number not words.) [] Full
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....
Use the combustion of methane for the following question: CH4 (g) + O2 (g) → CO2 (g) + H2O (l) ∆H = -890 kJ/mol A)Is the reaction exothermic or endothermic? B)If I combust 2 mol of methane, how much heat is absorbed or released - use the appropriate sign to indicate in your answer. C) If I combust 12.5 g of methane, how much energy in kJ is absorbed or released? Use the appropriate sign in your answer.
For the combustion reaction of methane, AHºf is zero for CH4 (g) + O2 (g) → 2H2O(g) + CO2 (g) A) 02 (g) B) CH4 (g) CO2 (g) D) H20 (g) E) Both O2 (g) and CH4 (g) 8 Given the following reactions N2 (g) + 202 (g) - 2NO2 (g) AH = 66.4 kJ 2NO (g) + O2 (g) → 2NO2 (g) AH = -114.2 kJ the enthalpy of the reaction of the nitrogen to produce nitric oxide N2...
A chemist measures the energy change AH during the following reaction: CH4(9)+202(9) + CO2(9)+2H2O(1) AH= -882. kJ Use the information to answer the following questions. This reaction is... ОО endothermic. exothermic. Yes, absorbed. Yes, released. Suppose 33.5 g of CH4 react. X 5 ? 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...
Thermochemistry Consider the combustion of propane: AH (k/mol) -105 substance CaHs (g) CO2 (g) O2 (g) H2O (g) 3 CO2 (g) + 4 H20 (g) CaHe (g) + 5 02 (g) -394 0 Use the heats of formation in the table to calculate AHatons -242 Is this reaction exothermic or endothermic? Explain your choice. The surroundings would become (circle one) cooler warmer Energy is (circle one) released from absorbed by the reaction.
2) AH corresponds to an process. a) negative, exothermic b) negative, endothermic c) positive, exothermic d) zero, exothermic none of these is correct e) 3) Which one of the following processes is exothermic? 2H2 (g) + O2 (g) C2H2 (I) a) 2H2O (g) b) C2H2 (g) c) CO2 (g) +2H2O (g) d) C2H2 (s) None of these e) CH4 (g) +202 (g) C2H2 (I)
4. Given the reaction: CH4 (8) + 2 O2(g) → CO2 (g) + 2 H20 (8) where AH = -891 kJ Calculate the enthalpy change if 1.00 g of methane (CH) is burned in excess oxygen.