Question

You are tasked with using hydrogen peroxide to propel a rocket into low earth orbit. You must generate 15 MJ of energy using the reaction shown below. 2 H_2 ​ O_2 ​ → O_2 ​ + 2 H_2 ​ O Use the data in Table 9.3 to determine the mass (in grams) of hydrogen peroxide required to generate 15 MJ of energy.

Mean bond enthalpies* (B/kJ mol1) F CI Br I S P Si 436 412 387 (1) 612 (2) 518 (a) 388 305 (1) 163 (1) 613 (2) 409 (2) 890 (3) 946 (3) 463 360 (1) 157 146 (1) 497 (2) 743 (2) 155 565 484 270 185 431 338 200 203 366 276 299 288 338 259 322 318 * Values are for single bonds except where otherwise stated (in parentheses): (a) denotes aromatic Cl 254 242 219 193 210 178 151 496 250 212 264 201 Si 466 226

Answer 1

Oo Entval z 205 K

6 tu6. 34 molu. L. 20万×103 5 0