Hydrogen and methanol have both been proposed as alternatives to hydrocarbon fuels. Write balanced reactions for the complete combustion of hydrogen and methanol and use standard enthalpies of formation to calculate the amount of heat released per kilogram of the fuel. Which fuel contains the most energy in the least mass? How does the energy of these fuels compare to that of octane (C8H18)?
A 20.0-L volume of an ideal gas in a cylinder with a piston is at a pressure of 3.0 atm. Enough weight is suddenly removed from the piston to lower the external pressure to 1.5 atm. The gas then expands at constant temperature until its pressure is 1.5 atm. Find E, H, q, and w for this change in state.
the compassion off problematic acid is represented as shown, we have the balance chemical equation off the compassion reaction we're here. The changing and Talebi can be determined from the products minus the reactors, which gives us a changing in Talebi off negative, 10,660 0.8. We know the conversion factor off one kilo. Jule off energy is equal to 0.38 The heat off the reaction for the above chemical detection is negative. To told him 537 calories. The amount off released program can be determined from the unitary method, which gives us 9.8948 calories per gram. We have the compassion reaction off Sue Cruz as represented. Using the same formulas, we can determine the change in and tell a B, which is negative. Five toes in 639.7 kilo. Jules, we convert the energy from kilo jewels into calories, converting it. We have negative 1342 points 248 calories. From the above calculation, we can say that the fat contains more calories per gram, then sugar