Problem 108

Meals-ready-to-eat (MREs) are military meals that…


Need more help? Fill out this quick form to get professional live tutoring.

Get live tutoring
Problem 107

(a) When a 0.235 -g sample of benzoic acid is combusted in a bomb calorimeter (Figure 5.19$)$ , the temperature rises $1.642^{\circ} \mathrm{C} .$ When a $0.265-\mathrm{g}$ sample of caffeine, $\mathrm{C}_{8} \mathrm{H}_{10} \mathrm{N}_{4} \mathrm{O}_{2}$ is burned, the temperature rises $1.525^{\circ} \mathrm{C} .$ Using the value 26.38 $\mathrm{kJ} / \mathrm{g}$ for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume. (b) Assuming that there is an uncertainty of $0.002^{\circ} \mathrm{C}$ in each temperature reading and that the masses of samples are measured to $0.001 \mathrm{g},$ what is the estimated uncertainty in
the value calculated for the heat of combustion per mole of caffeine?


(a)$$4.22 \times 10^{3} \frac{k J}{m o l}$$
(b)$$\pm 45 \frac{k J}{m o l}$$



You must be signed in to discuss.

Video Transcript

looking out for pacing. Spence, I can't stay. So have Sarah fight. There are planes, Teo 35 from and the children. Then picture is one find since for two processes for Africa. Just from the question, several points to cease fire on a changing temperature is 1.5 to 5 recesses. The phone off, cos see it it there Aten and for Walter. So I've been reading from it because m c 13 we kiss because toa say yeah. In this case, I'll say thiss surfaces discomfort, but also because it happens that won't talk. That produces only it on the calorie meter. No is getting that. It can't really from the ones we notice with thie and the change. There we go. Good. His follow okay for the face off. Vance, I concede we have the intense without Okay, that's it. Well, we already saw your conceit, I think for the ballerina. Yes, I can see that 26 point I created, you know, you know, program that it happens off like I say when this question we have Centrepoint 235 from Cassie on. Then you get a divorce Incapacity of the perimeter. That temperature rice for Percy. Andi asked. Everyone sees for two. So from here on, get my s o as a c. He cost 20 pieces. I traded. It's what? Thank you. What's a five way? 235? A little too five by his thing is, this is how by six parts this sister. So the capacity of the perimeter is to the clients. 54 Kano, go. Point increase. Essex, No, for conversion off. Caffeine for compassion. Off camping. We have the change in temperature. This is for company. Maybe the incapacity competitivity, calorie media buy Better change for that coffee. There we give me. It's great. 20 capacity. We already got that story. 0.77 fine in a girl, but increases. But if they bridge arised for caffeine is long gone. 5 to 5 princesses. I don't like it. Quite a point 57 for its five villages, but this is the amount ofthe in produced by by a single point. So seize, grab. Truth is five gram of caffeine because we use in this question trip on Tuesdays from time off in the hills. Well, lots of complicity. The campus is the amount of caffeine. My moon of collapsing. So all right. Five points. 57 for eight. I'm trying to write everything I submit to what it was sickening computer I want or this month decide what after after the operation. So this amount off it, but by several 0.26 Fine. Graham off coughing. So I'm Mark. Want more coffee? Even if you can complete it must of formal capping company C Happiness. See it a day and four. But okay, that would be so fast. Eight blows 5,000 wass for the past two. Plus since then passed. Put it back for her assistant Pastor on diet Gives me financing for when it's for example. All right, well, thanks for crash. So if I get into Brown Graham So everything will be for key. Wow, when I want three for Hello, Bill. I'm full of crap. No, that's like air for 214 Then why I'm a killer too. Thanks. Tow three. It's hopeless.

Recommended Questions