please answer questions 6. According to the following thermochemical equation, what mass of butane (58.14 g/mol)...
Question 3 Propane (C3Hg) undergoes combustion according to the following thermochemical equation: C3H8(g) + 5 O2(g) - 3 CO2(g) + 4H2O(g) AHrxn=-2043.0 kJ Substance Heat of Formation (kJ/mol) CO2(g) -393.5 H2O(g) -241.8 O2(g) 0 C3H8(g) ? Calculate the standard enthalpy of formation of propane C3Hg a. -104.7 kJ/mol O b. +1407.7 kJ/mol O C. -1407.7 kJ/mol O d. +104.7 kJ/mol o e. -4190.7 kJ/mol uestion 4 Consider the evaporation of liquid water to water vapor at 125°C. What is true...
QUESTION 1 According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? Assume excess SiO2. SiO2(s) + 4 HF(g) SiF4(g) + 2 H20) AH®rxn = -184 kJ 1079 150.9 173 g 37.59 QUESTION 2 The value of AH® for the reaction below is -1107 kJ: 2Ba (s) + O2(g) + 2Bao (s) How many kJ of heat are released when 5.75 g of Bao (s) is produced? 96.3...
According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy? SiO2(s) + 4 HF(g) → SiF4(g) + 2 H2O(l) ΔH°rxn = -184 kJ 54.1 g 95.5 g 102 g 68.0 g 191 g
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The following are the thermochemical equations for the formation of hydrogen sulfide (H,S), water, and sulfur dioxide (SO2), all in the gaseous state 13. H(8) S() Sg) ΔΙ{--20.6 kJ ΔΙ!--483.6 kJ ar{--296.9 kJ S(s)+0(g) SO.(8) Using the above thermochemical equations, and applying Hess' law, determine AH for the following reaction: 2H,S(g) 30(g) 2H,O(g) 2S0() AH? a) -1036.2 kJ b) -801.1 kJ c)-621.8 kJ ) 69.0 kJ e 151.4 k
Gasoline (octane) burns according the following equation. 2 C3H18 (1) + 25 O2 (g) 16 CO2 (g) +18 H20 (1) AH°= - 10,943 kJ How much heat is released when 10 g of octane is burned? (The molar mass of C = 12.0 g/mol, the molar mass of H = 1.0 g/mol). 960 kJ 62,400 kJ 480 kJ 1920 kJ
Gasoline (octane) burns according the following equation. 2 C3H18 (1) + 25 O2 (g) 16 CO2 (g) +18 H20 (1) AH°= – 10,943 kJ How much heat is released when 10 g of octane is burned? (The molar mass of C = 12.0 g/mol, the molar mass of H = 1.0 g/mol). O 1920 kJ O 960 kJ 480 kJ 62,400 kJ
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Which of the following has a AH-0kJ/mol? A) NO(g) C) Fe (aq) D) H20( E) N (R) 23. Find the standard enthalpy of formation of ethy lene, Call4(g), given the following data: beat of combustion of CaH(g)--1411 J/mol, AHCO )-393.3 Jmol AH TH OD)]-285.8 kJ/mol. A) 52 kJ/mo B) 87 kJ/mol C) 731 kJ/mol D) 1.41 x 103 kUmol E) 2.77 x 10 kJ/mol 24. During volcanic eruptions, hydrogen sulfide gas is given off and oxidized by...
The following thermochemical equation is for the reaction of ammonium nitrate(s) to form dinitrogen monoxide(g) and water(g) NH,NO3() N2O(g) + 2H2O(g) AH = -35.9 kJ How many grams of NH NO,(s) would have to react to produce 12.1 kJ of energy? grams The following thermochemical equation is for the reaction of hydrogen sulfide(g) with oxygen(g) to form water(g) and sulfur dioxide(g). 2H2S(g) + 302(g)—2H2O(g) + 2802(8) AH=-1.04x109 kJ When 9.64 grams of hydrogen sulfide(g) react with excess oxygen(g), -588.8 kJ...
Question 3 Propane (C3H8) undergoes combustion according to the following thermochemical equation: C3H8(g) + 5 O2(g) -- 3 CO2(g) + 4H2O(g) Arxn = -2043.0 kJ Substance Heat of Formation (kJ/mol) CO2(g) -393.5 H2O(g) -241.8 O2(g) 0 C3H8(g) ? Calculate the standard enthalpy of formation of propane C3H8 a. -104.7 kJ/mol ob. +1407.7 kJ/mol C. -1407.7 kJ/mol O d. +104.7 kJ/mol o e. -4190.7 kJ/mol
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8 CO2 + 10 H20 AH - -5316 kJ, how many grams of C4H10 (MM = 58.14 g/mol) would have to react in order to release (7.44x10^4) kJ of heat? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest...