Box 0 8.5 Another type of fuel cell uses methanol instead of hydrogen.
Figure 7 represents the reaction in this fuel cell.
Figure 7
H
2H-C-0-H + 30=0
20=C=0 + 4H-O-H
H
I
Table 4 shows the bond energies for the reaction.
Table 4
C-H
C-O
O-H
O=0
C=O
412
360
464
498
Bond energy in kJ/mol
805
Calculate the overall energy change for the reaction.
Use Figure 7 and Table 4.
[3 marks]

What type of electromagnetic radiation has a shorter wavelength than blue light

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap