2 C 6 H 14 + 19 O 2 → 12 CO 2 + 14 H 2 O The enthalpy of reaction is −4163.0 kJ/mol. How much energy (in joules) will be released if 94.08 grams of hexane is burned. (Molar mass of hexane = 86.20 g/mol). Record your answer in scientific notation using 3 significant figures.
The combustion of hexane is given by the following reaction. 2 C6H14 + 19 O2 12 CO2 + 14 H2O The enthalpy of reaction is −4163.0 kJ/mol. How much energy (in joules) will be released if 82.22 grams of hexane is burned. (Molar mass of hexane = 86.20 g/mol). J
The combustion of propane is given by the following reaction. C3H8 + 5 O2 → 3 CO2 + 4 H2O The enthalpy of reaction is −2202.0 kJ/mol. How much energy (in kilojoules) will be released if 23.55 grams of propane is burned. (Molar mass of propane = 44.11 g/mol). kJ
a. calculate the Kx for this reaction at 1150K. (present your answer in 2 significant figures and no scientific notation) b. calculate Kp for this reaction at 1150K. present your answer in 2 significant figures and no scientific notation c. calculate the standard gibbs energy change for this reaction at 1150k ( present your answer in J/mol with 4 significant figures and no scientific notation) d.calculate the standard enthalpy change for this reaction assuming that its value is not a...
Consider the following reaction: 2 HCl + CaCO 3 → CaCl 2 + H 2 O + CO 2 How many mols of calcium chloride can be produced if you begin with 7.49 mL of 0.62 M HCl and 12.26 grams of calcium carbonate? Record your answer in scientific notation, using 3 significant figures.
2. A reaction proceeds with ∆ H = -60 kJ/mol. The energy of activation of the uncatalyzed reaction is 140 kJ/mol, whereas it is 85 kJ/mol for the catalyzed reaction. How many times faster is the catalyzed reaction than the uncatalyzed reaction at 25°C? Express your answer in scientific notation to two significant figures
The standard enthalpy change for the following reaction is 1.16x103 kJ at 298 K. 2 CrO3(s) — 2 Cr(s) + 3 O2(g) AH° = 1.16x103 kJ What is the standard enthalpy change for this reaction at 298 K? Cr(s) + 3/2 O2() Cro33) Ethanol, C2H50, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to burn more efficiently...
6-5. During the combustion of 10.0 g of octane, CH18, 479.0 kcal is released? Write a balanced equation for the combustion reaction What is the sign of AH for this reaction? How much energy is released by the combustion of 1.00 mol of C8H18 How many grams and how many moles of octane must be burned to release 450.0 kcal? How many kilocalories are released by the combustion of 17.0 g of C.Htc? 6-6 If I burn 0.315 moles of...
Review Co Part A A calorimeter contains 300 ml. of water at 135 C When 2.10 g of X (a substance with a molar mass of 450 g/mol) is added, it dissolves via the reaction X(s) + H20(1)-+X(aq) and the temperature of the solution increases to 275 °C Calculate the enthalpy change. AH for this reaction per mole of X Assume that the specific heat of the resulting solution is equal to that of water [4.18 /(C) that density of...
- O CO Thermochemical equations Thermochemical s are chemical S tions that day show the relationship between mass of products and reactants and enthalpy changes. For example C4 () + 2O (G) ng) + 2H20 (0) AH = -890 A kJ moles of O2 = -890 A kJ 2 moles of 2H20 = -890.4 kJ - 890.4 kJ - 890.4 kJ mol _moles of CH = - 890.4 kJ I moles of CO2 = - 890.4 kJ - 890.4 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