Consider the reaction shown:
C3H8 + 5 O2 → 3 CO2 + 4 H2O + 488 kcal
We can say that this reaction is ________ and that the sign of ΔH is ________.
endothermic; positive
exothermic; positive
exothermic; neither positive nor negative
endothermic; negative
exothermic; negative
Consider the following reaction: C3H8 + 5 O2 → 3 CO2 + 4 H2O How many grams of water vapor can be produced if you begin with 38.65 g of C3H8 and 15.48 g of O2?
You have the following info: C3H8(l) + O2(g) ---> CO2(g) + H2O(g) ∆Hrxn = -2044 kJ Given 4.73 Kg of C3H8(g) react and the gas produced from the reaction is collected in a 5.00 L container at 298 K. Molar masses: C3H8 = 44.09 g/mol, H2O = 18.02 g/mol, CO2 = 40.02 g/mol 1) What is the heat of the reaction given the conditions described (i.e. what is qrxn)? 2) Is the reaction exothermic or endothermic? 3) Is heat a...
You have the following info: C3H8(t) + O2(g) → CO2(g) + H2O(g) AHrx = -2044 kJ Given 3.97 kg of C3H8(9) react and the gas produced from the reaction is collected in a 5.00 L container at 298 K. Molar masses: C3H8 = 44.09 g/mol, H2O = 18.02 g/mol, CO2 = 40.02 g/mol a) What is the heat of the reaction given the conditions described (i.e. what is Gnx)? b) is the reaction exothermic or endothermic? c) Is heat a...
(6.2) Consider the reaction: C3H8) + 5 029) -- 3 CO2(g) + 4H2009), where AH = -531 kcal. Which statement concerning this reaction is true? Select one: a. The reaction is endothermic. b. The products are higher in energy than the reactants. c. Heat is absorbed. d. The bonds formed in the products are stronger than the bonds broken in the reactants. Check
Consider the combustion reaction of propane: C3H8(g)+ 5 02(g)3 CO2(g) +4 H20(g), where AH= -531 kcal. If 6.70 x 104 kcal of energy is released in the reaction, how many grams of oxygen were consumed? ed 12.6 g of O2 2.02x 104 g of O2 wer X 63.1g of O2 404 g of O2 Byt Hack
CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g) Calculate ΔH for the reaction using the bond enthalpies given. C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) Calculate the overall enthalpy change for this reaction using the bond enthalpies given.
10. Consider the following reaction: 3 C + 4 H2O + 1038kJ → C3H8 + 202 MM = 12.01 MM = 18.02 MM = 44.11 MM = 32.00 a) Is this reaction endothermic or exothermic? Please explain. b) What mass of carbon must react with 8.99x109 kJ of heat? c) How much heat is required to produce 1.0kg of propane, CsH8?
The combustion of propane (C3H8) produces CO2 and H2O: C3H3 (8) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g) mol The reaction of 2.5 mol of O2 with 4.6 mol of C3H8 will produce _______ of H2O. A) 4.0 B) 3.0 C) 2.5 D)2.0 E) 1.0
Use the following information to calculate the heat of formation of propane C3H8. 3 C (S-Graphite) + 4 H2 (g) —› C3H8 (g) 1. C (S-Graphite) + O2 (g) —› CO2 (g) ΔH = - 393.5 kJ 2. H2 (g) + ½ O2 (g) —› H2O (l) ΔH = - 285.8 kJ 3. C3H4 (g) + 4 O2 (g) —› 3 CO2 (g) + 2 H2O (l) ΔH = - 1937 kJ 4. C3H6 (g) + 9/2 O2 (g) —›...
The combustion of propane (C3H8) produces CO2 and H2O according to the following balanced equation: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g) If the hydrocarbon is present in excess, what mass of oxygen (O2) in grams is necessary to form 12.9 g of CO2? Round your answer to the nearest 0.1.