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#1: The average velocities of gas molecules in cylinders A, B, C, and D are 20 m/s, 50 m/s, 60 m/s, and 100 m/s, respectively. The volume of each cylinder is the same, and each has the same number of moles of gas. Which cylinder is the hottest?
A,B,C or D?
**my answer: D
is that right? @aaronq :)
 one year ago
 one year ago
#1: The average velocities of gas molecules in cylinders A, B, C, and D are 20 m/s, 50 m/s, 60 m/s, and 100 m/s, respectively. The volume of each cylinder is the same, and each has the same number of moles of gas. Which cylinder is the hottest? A,B,C or D? **my answer: D is that right? @aaronq :)
 one year ago
 one year ago

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aaronqBest ResponseYou've already chosen the best response.1
yep, average kinetic energy = temperature
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
#2: You have 0.5 L of air at a pressure of 203 kPa and 70°C in a rigid, sealed container. What is the absolute temperature of the air? A.  70 K B. 70 K C. 203 K D. 273 K **my answer: C is that right?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
awesome! so #1 is right? it's D?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
#3: At which of the following temperatures is the average kinetic energy of the molecules in one liter of nitrogen gas greatest? A. 40°C B. 273 K C. 310 K D. 60°C **my answer: B. 273 K is that right?? I'm not too entirely sure tho :/
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
what do they mean by absolute temperature? because it doesn't seem like the mean the kelvin scale
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
i honestly don't know!! Hahha it just says absolute temperature....i think it means kelvin tho.. idk :/
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
#4: At 52°C, the pressure inside a gasfilled container is 467 kPa. What is the absolute temperature of the gas? A. 163 K B. 325 K C. 335 K D. 651 K **my answer: B. 325 K
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
#3 is asking which temp is the highest
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
i think they mean kelvin cuz in chem they refer to it as abs. temp a lot.. and kelvin appears A LOTT in my lessons :/
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
oh so would #3 be D. 60°C??
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
no well i know that kelvin is the absolute temp scale :P
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
#5: choose the statement that is true at room temperature if both systems are at the same pressure and volume according to the pic attached!
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
A. The temperature of the system in curve A is greater than the temperature of the system in curve B. B. The temperature of the system in curve B is greater than the temperature of the system in curve A. C. The temperature of the system in curve A is equal to the temperature of the system in curve B. ***my answer: A is that right?
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
i think they want it scaled in regards to pressure...
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
4 is right, but 2 still doesn't make sense, none of the options are correct..
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
wait so #3 is C. 310 K ??? and yay for 4! and aww :( idk then.. what do u think about #2 then? and was 1 correct?
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
5 is incorrect.. you're getting mixed up with the graph by it just being taller. Look at the axes. you know that speed is proportional to temperature, i.e. the faster the molecules the greater the temp
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
so the answer for 5 is B ten?
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
sorry i meant 3 is D, 333 Klvin
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
for 2, i honestly don't know, none of the choices given make any sense
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
ohh :( okay... what would u go with as ur guess tho?? for #2? and what was 5 then? was it B?
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
um for 2, i honestly can't say one is more right then the other haha sorry :( for 5, maybe, why do you think so?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
okay haha ill have to wing #2 :P and 5 i think cuz A drops REALLYYY fast right? but B is constant and the curve elongates more... am i right?? is the answer B?
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
um it's B, not those aren't reasons :P basically, because B is farther right on the "speed" axis, that tells you that it has higher kinetic energy and therefore higher temperature, tada
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
hahah i seee :) lol and i liked the tada thing at the end :P
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
the elongation part if just the distribution of speed of the molecules, more narrow bands have smaller distributions (particles are only within a small temperature range e.g. 2030 degrees) longer distributions (like B) say that the range of temp of the particles is large, e.g. 1060 degrees
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
hahaha woo :) sometimes it's like magic, chemistry
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
ohh okay haha thanks sooooo muchh!!!! :) u da besttt :) u rock and you rule!! :) haha and i know its like magic!
 one year ago

aaronqBest ResponseYou've already chosen the best response.1
LOL that picture is awesome!... but corny thanks! see ya
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
haha definitely! see ya!! Thanks again :)
 one year ago
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