Consider the complete combustion of butane, C4H10, for use in hand held lighters. Write the complete balanced reaction with phase symbols. Assume water in the gas 5. a. phase is produced. b. Calculate the AHrxn for the reaction you wrote using average bond energies. AHrxn = En:AHbonds broken (reactants) - EnpAHbonds formed (products) Table 9.2 Average Bond Energles (kJ/mol) and Bond Lengths (pm) Bond Energy Length Bond Energy Length Bond Energy Length Bond Energy Length Single Bonds H-H Si-H Si-Si S-H S-S S-F 74 N-H 347 134 323 226 368 432 391 101 148 H-F 5ర 92 N-N 160 146 234 266 204 H-CI 427 127 N-P 209 177 Si-O 161 327 158 H-Br 363 271 201 Si-S Si-F 141 N-O 201 144 226 210 S-CI S-Br S-I H-I 295 161 N-F 272 139 565 156 218 225 -170 Si-CI Si-Br Si-I N-CI 200 191 381 204 234 C-H 413 109 N-Br 243 214 310 216 C-C 347 154 N-1 159 222 234 240 F-F 159 143 C-Si 301 186 F-CI 193 166 F-Br 212 178 0-H 0-P C-N 305 147 467 96 P-H 320 142 C-O 358 143 351 160 P-Si 213 227 F-I 263 187 CI-CI CI-Br 243 215 208 199 214 264 187 0-0 204 148 P-P 200 221 156 151 142 C-S 259 181 0-S 265 P-F 490 0-F P-CI 331 204 C-I 243 190 203 C-F 453 133 C-CI 339 177 0-CI 164 P-Br 272 222 Br-Br 193 228 246 Br-I 175 248 0-Br 0-I C-Br 276 194 234 172 P-1 184 C-I 216 213 234 194 1-1 151 266 Multiple Bonds NN NO N N CC 945 110 839 891 1070 614 134 418 122 121 C-N 615 127 607 120 CN 115 1020 106 745 123 498 121 CO 113 799 in CO2)

Please don't provide handwritten solution ....

5. When 1.00g of NaCl (MM 58.44 g/mol) is dissolved in 50.00g of water, the temperature drops by 0.319°C. This temperature change is only detectable by the most sensitive thermometers. If this process takes place in a very well insulated calorimeter, no calorimeter constant is needed. a. Calculate the enthalpy change per gram of NaCl. b. Calculate the enthalpy change per mole of NaCl.

How much methane must be combusted in order to transfer 2225 KJ of energy to a pot of water? The molar enthalpy for the combustion of methane is -890 KJ/mol. 40 g 80 g 20 g 15.6

a. How much energy is required to decompose 850 g of PCl3, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and may be useful.4 PCl3(g) → P4(s) + 6 Cl2(g)             ΔH°rxn = +1207 kJ   b. The specific heat capacity of liquid water is 4.18 J/g-K. How many joules of heat are needed to raise the temperature of 6.00 g of water from 22.0°C to 57.0°C? 1.99 × 10-2 J 1.98 × 103 J 65.0 J 50.2 J 878 J

What is the enthalpy change, Delta Hrxn, for the following reaction?      2 RbI (s)  +  Cl2 (g)    -->   2 RbCl (s)  +  I2 (s) a. 1.33 x 103 kJ b. 656 kJ c. – 215 kJ d. 107 kJ e. 763 kJ f. none of these g. – 1.33 x 103 kJ h. 871 kJ

thway | Algebra. Pt Periodic Table - Pta... Scientific Calculator Gravitational Force... Conservation of Mo... Part 1-Combustion of Methane Equation for Enthalpy AH = Hbonds broken- Hsonds formed The following table is a list of selected bond energies. The bonds present in this table are common bonds for combustion reactions Selected Bond Energies Bond Energy (kI/mole) Bond Bond Energy Bond (kl/mole) H-H 436 C=0 799 O-0 495 C-C 348 O-H 463 C=C 614 C-H 413 C-C (aromatic) 519 C-O 358 N=0 623 Use the following balanced equation and chart to complete the bond energy calculations for the fuel, methane CH+202-CO2+2 H20 Compound Total Bond Energy Oxygen, O2 495 kJ/mol Carbon Dioxide, CO, 1598 kl/mol Water, H,O 926 kJ/mol

c. Draw a potential energy diagram for the formation of NO₂(g): N₂(g) +20₂(g) → 2NO2(g). AHreaction = 66.2 kJ/mol. Label the graph with "Reactants," "Products," "AHreaction," and "Ea