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Among the substances that react with oxygen and that have been considered as potential rocket fuels are diborane [
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- Among the substances that react with oxygen and that have been considered as potential rocket fuels are diborane [B2H6(g), which produces B2O3(s) and H2O(g)], methane [CH4(g), which produces CO2(g) and H2O(g)], and hydrazine [N2H4(l), which produces N2(g) and H2O(g)]. On the basis of the heat released by 2.26 kg of each substance in its reaction with oxygen, and assuming that thermal energy is the most desirable property in rocket designs, evaluate the possibility of each being used as a rocket fuel. (Hint: Use the Supplemental Data to compute ΔHorxn in kJ/mol, and qsurr in MJ for each fuel. Enter unrounded values.) 1) diborane ΔHorxn _____kJ/mol qsurr _____MJ 2) methane ΔHorxn _____kJ/mol qsurr _____MJ 3) hydrazine ΔHorxn _____kJ/mol qsurr _____MJ 4) Which of these compounds offers the best possibility as a rocket fuel, diborane, hydrazine, or methane?arrow_forwardA large sport utility vehicle has a mass of 2.5 * 103 kg. Calculate the mass of CO2 emitted into the atmosphere upon accelerating the SUV from 0.0 mph to 65.0 mph. Assume that the required energy comes from the combustion of octane with 30% efficiency. (Hint: Use KE = 1/2 mv2 to calculate the kineticenergy required for the acceleration.)arrow_forwardHow many kg of CO2 are emitted from an automobile that completely combusts all the gasoline in its 16.5 gallon fuel tank? You may assume that gasoline is entirely octane, which has the following combustion equation: 2 C3H18 (1) + 25 O2 (g) → 16 CO2 (g) + 18 H20 (g) Useful information: • 1 gallon = 3.7854 L. • This combustion occurs in excess O2. • The density of octane is p =703 g/L. • The molar mass of CO2 is 44.01 g/mol. • The molar mass of octane is 114.23 g/mol.arrow_forward
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