Question

I need help on a laboratory that I performed
help would be much appreciated!

Answer 1

@iGreen
@ganeshie8
@sweetburger
@ankit042
@iambatman

Answer 2

Okay, what is it.

Answer 3

sorry my computer froze -.-'

ok so the thing is that I have to do this experiment where I put a ballon into an ice bucket and measure its temperature but the lab says 1. From Part 2 of the lab activity, plot a graph of volume vs. temperature (in kelvins) with the two data points that resulted from your experiment. Draw a straight line connecting the two points, thus assuming a linear relationship between volume and temperature. The x-intercept corresponds to where the volume would be zero and the temperature can be no lower, defined as absolute zero. Absolute zero is 0 K. Compare your results to those expected. How close to absolute zero was your intercept? Why might your value be different from absolute zero? I already have my measurements but still the 0K part is confusing me
this are my results balloon before: 15 cm, C=52.25pie balloon after: 14 cm, C=49pie room: 19.4 Cº 292.4 K water: 5 Cº 278 K V = (4/3)pi(r^3) C=2pir R=C/2pi R for before=8.32 R for after=7.80 Volume for before: 2411.228472 cm^3 volume for after: 1986.79104 cm^3

Answer 4

I sent him/her a message (I was and still am deperate to finish this lol) and he/she did not reply so I doubt it :/

Answer 5

Let me see if I can find someone.

Answer 6

@Joel_the_boss

Answer 7

ok thank you! :)

Answer 8

The volume of a gas is directly proportional to its absolute temperature (given constant amount and pressure)
The volume of a gas is inversely proportional to its pressure (given constant amount and temperature)

Does that help?

Answer 9

yeah Im confused about that is that I already did my graph but the part on the question where they talk about absolute zero is what confuses me because when I do a straight line it doesn't match the two values that I plugged into my graph

Answer 10

Ok what do you need to solve? Give me it and I can help solve it.

Answer 11

Draw a straight line connecting the two points, thus assuming a linear relationship between volume and temperature.
The x-intercept corresponds to where the volume would be zero and the temperature can be no lower, defined as absolute zero. Absolute zero is 0 K. Compare your results to those expected. How close to absolute zero was your intercept? Why might your value be different from absolute zero?

Answer 12

btw thank you so much for helping :)

Answer 13

Don't medal spam me!!! D:<

Answer 14

haha ok XD

Answer 15

That's not funny, its something you can get in trouble for. >:(

Answer 16

how? I was just giving you medals o.O and I said I was sorry and stopped if you want I'll undo the medals

Answer 17

hmm....can we say that the value is different because of any error?

Answer 18

I used the formula they provided me with to find volume and radius

Answer 19

O_O @Daniellelovee You can get him in serious trouble. O.o Please don't do it again.

Answer 20

fine I'm taking my medals back I did not mean it to be a bad thing :(

Answer 21

but now seriously please help me on chemistry

Answer 22

oh okay..didnt read the formula..lol

Answer 23

lol is ok so do you know what to do?

Answer 24

i thought joel explained...

Answer 25

he did then he got mad (my fault but I swear it was unintentional) and then he logged out

Answer 26

oh well okay.......well about the second question.... we can say as the balloon was in the bucket ...and there was no lid ..so temperature change can occur OR and yes...we can also say that the size changes because the air particles inside the balloon gets closer so it contracts.......well thats all i can help...really sorry if u dnt understood...

Answer 27

haha ok thank you either way :)

Answer 28

Your Welcome :)

Answer 29

did you get where is your absolute zero?

Answer 30

& be careful with graph (dependent variable y-axis and independent variable x-axis)
x-intercept is when your straight line crosses x-axis while your y-axis value = 0
dependent variable y-axis - is your volume
independent variable x-axis - is your temperature

if your x- intercept value is not where your volume would be 0 then its not absolute zero and maybe lower (negative x) or higher value (positive x)
expected is absolute 0 so compare it
then think of things @SyedMohammed98 said

Answer 31

i know i m not that much correct....just wanted to help....i even told her srry (in advance)

Answer 32

you are pretty much right tho @SyedMohammed98 :)

Answer 33

"not that much" means not all.........thnx anyways :)

Answer 34

my issue right now is that when I graph the absolute zero which according to the volume formula would be 0 the graph does not match it it looks something like this
and that is not a straight line