Question

31.5 grams of an unknown substance is heated to 102.4 degrees Celsius and then placed into a calorimeter containing 103.5 grams of water at 24.5 degrees Celsius. If the final temperature reached in the calorimeter is 32.5 degrees Celsius, what is the specific heat of the unknown substance?
Show OR explain the work needed to solve this problem, and remember that the specific heat capacity of water is 4.18 J/(degrees C * g).

Answer 1

@aaronq

Answer 2

I did it one way, and got 0.982, but then I did it another way, and got 1.57

Answer 3

Way 1: 4.18 * 103.5 * (32.5−24.5)=c(31.5)(102.4−32.5)
432.63(5)=c(31.5)(69.9)
2163.15=c 2201.85
c=.982

Answer 4

@hartnn

Answer 5

@Loser66

Answer 6

Idk which way is right??

Answer 7

@blackops2luvr

Answer 8

@dpasingh

Answer 9

@RadEn

Answer 10

2nd way: (103.5) (32.5 - 24.5) (4.181) = (31.5) (102.4 - 32.5) (x)

Answer= 1.57

Answer 11

ummm this is chemistry O_O

Answer 12

not math

Answer 13

i know..

Answer 14

this is the chemistry section.

Answer 15

ik dat

Answer 16

do u know anyone on here that knows it?

Answer 17

@phi

Answer 18

nop... btw im makeing u a profile pic :)

Answer 19

hey, i just looked at ur profile pic up close, i know who that dude is, I've seen some pics of him online.. i forgot his name :P

Answer 20

XD

Answer 21

der u go :D

Answer 22

re-do the first way
Way 1: 4.18 * 103.5 * (32.5−24.5)=c(31.5)(102.4−32.5)
is correct. But somewhere after this you made a mistake.

Answer 23

i got a new dog :D

Answer 24

i want a cartoonish pic like that

Answer 25

its an american bulldog

Answer 26

that's so cute, how'd you make that on openstudy

Answer 27

from a rescue shelter

Answer 28

thanks Phi

Answer 29

i like that kind of dog :3

Answer 30

omg, the thing on the left says:

Bump in 167772165: 41 .....

Answer 31

is that even like real time?? omg

Answer 32

here is one problem 32.5−24.5 is not 5

Answer 33

thats not her.. but shes next to me :D

Answer 34

her name is phoebe

Answer 35

is that urs?

Answer 36

It's big

Answer 37

.-.

Answer 38

ooh nice name

Answer 39

nah im not into the emo theme lol

Answer 40

XD i drew dat

Answer 41

I didn't even make the username 'cupcake' , something happened with my account, so openstudy just gave me a random new name

Answer 42

well a fail drawing

Answer 43

I gtg do chemistry now :/

Answer 44

XD ok

Answer 45

u drew that? awesome

ok bye

Answer 46

buhbye