Chemistry help

CollinsE90 · 02-15-2011, 11:12 PM

Quote:

Originally Posted by skinnycow

booo it bugs me when i get something wrong!!!!

Now the kitchen, there is a place you could beat him. Plus its just simple math to calculate the time to cook the food.

skinnycow · 02-15-2011, 11:16 PM

Quote:

Originally Posted by CollinsE90

Now the kitchen, there is a place you could beat him. Plus its just simple math to calculate the time to cook the food.

YOU, in kitchen as well!!! *pan to collin's face*

aretardedorange · 02-15-2011, 11:17 PM

Quote:

Originally Posted by CollinsE90

Now the kitchen, there is a place you could beat him. Plus its just simple math to calculate the time to cook the food.

aretardedorange · 02-15-2011, 11:18 PM

Quote:

Originally Posted by twinturbo335

is Q1 .0316?

C=Q/M(deltaT)

First I tried to solve for TF for the 2nd part.
(78.7g)(4.184)(Tf-66.2)

=85J

(55.89)(C)(61.1-12.9)

C=2693.9

85J/2693.9

.0316J/G [C]

No incorrect...must be doing something simple wrong maybe the sig figs?

JayKay335i · 02-15-2011, 11:26 PM

Everybody stfu and get back in the kitchen

skinnycow · 02-15-2011, 11:28 PM

Quote:

Originally Posted by JayKay335i

Everybody stfu and get back in the kitchen

we'll meet you there

Inspired · 02-16-2011, 02:09 AM

Quote:

Originally Posted by aretardedorange

No incorrect...must be doing something simple wrong maybe the sig figs?

is it 74.38J/G C?

XYR03 · 02-17-2011, 02:54 PM

Quote:

Originally Posted by skinnycow

1) 0.1222
2) 142718.4

the first one's tricky

on the first one, since the metal is in solution, you'll end up having the same temperature (between water and the metal) which means T-final for the water is also 61.1, so you throw that into the Q = mc(Tf-Ti) equation and you get the energy change by the water, Q = 329.28 since you have Q, which will fit into the Q=mcT on the metal equation, you can put everything in and find c 329.28 = (55.89)(c)(61.1 - 12.9) rearrange the equation and solve for c

U got brains skinny...I'm really proud of u.

DevJ · 02-17-2011, 11:42 PM

well since your questions already solved I'm no help. Let me know if you do need more help though..I'm a chem tutor haha

ghosthi32 · 02-17-2011, 11:43 PM

DEV...you bastid. where have you been

Seminole · 02-17-2011, 11:49 PM

Never took chem so I have no clue what is going on in this thread.

ghosthi32 · 02-17-2011, 11:52 PM

Quote:

Originally Posted by Seminole

Never took chem so I have no clue what is going on in this thread.

chem sucks so does bio

02-15-2011, 11:26 PM	#27
JayKay335i Banned 198 Rep 5,046 Posts Drives: ///M323 DCT Join Date: Apr 2009 Location: North Dakota; its best DUHHHHHH iTrader: (1)	Everybody stfu and get back in the kitchen
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02-17-2011, 11:42 PM	#31
DevJ Colonel 156 Rep 2,736 Posts Drives: R8 V10+/YMB M4 Join Date: Nov 2007 Location: North Texas iTrader: (1)	well since your questions already solved I'm no help. Let me know if you do need more help though..I'm a chem tutor haha __________________ ‘23 RRS First Edition '22 X7 M50i '18 R8 V10+ http://www.bimmerpost.com/forums/attachment.php?attachmentid=133578&d=1204654487[/IMG]
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02-17-2011, 11:43 PM	#32
ghosthi32 Banned 39 Rep 2,504 Posts Drives: Water camel Join Date: Dec 2009 Location: strait of hormuz iTrader: (0)	DEV...you bastid. where have you been
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02-17-2011, 11:49 PM	#33
Seminole Colonel 478 Rep 2,032 Posts Drives: Red Flyer Join Date: Aug 2008 Location: 38.8977° N, 77.0366° W iTrader: (2) Garage List 2008 E90 328i [7.00]	Never took chem so I have no clue what is going on in this thread. __________________
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