00:02
Okay, so in order to answer this question, you actually need to know the ansopi of the combustion of both propane and butane, which not is given in this book, but actually it's in the question set, question 72 and the question 73.
00:22
This two question asks you to calculate the anarchy of the combustion.
00:32
So if you did calculation, you can find that the ancillary of the combustion of the propane, which is 6 .h8, is around minus 2 ,0, 260 kilo per more.
00:57
And for the butane, which you can calculate from the question 73, it's actually equal to to minus, two thousand and six hundred and sixty kilojou per more.
01:19
So these are two information, two pieces of the information that you need to calculate this question.
01:26
So now let's look at the question itself.
01:30
So both propane and the boutain are used as gaseous fuels, which compound produce more heat per gram when burned.
01:39
So basically what we need to do, to solve this question is convert this ancillary into from kiljo per more to kiljo per grams and compare their difference.
01:59
So for propane, right, we can use here just use like energy density to replace, right? we say, right, we actually equals to, right, since this is one more, but we want programs, right, it's equals to its energy of combustion over its more mass...