Question

Calculate the energy change (q) of the surroundings (water) using the enthalpy equation

qwater = m × c × ΔT.

Answer 1

@iPwnBunnies im back lol

Answer 2

Ok.

Answer 3

<.< and values?

Answer 4

Somy c:

Answer 5

sorry had to grab lunch im typing them now

Answer 6

Bunnies♥

Answer 7

kanuey <3

Answer 8

Kainui c:

Answer 9

m = 27.776

c = i dont exactly know this one because i was not given the heat capacity.

delta T = 100.5 - 38.9

Answer 10

Kai ♥♥♥

Answer 11

and i assume q water is what we are finding

Answer 12

dude @Avenged7x you have all the values and formula >.>

Answer 13

Specific heat capacity of water is 4.18

Answer 14

its i guess constant value for water :D

Answer 15

I thought heat capacity of water was defined to be 1 or something. I don't know, maybe I'm in the wrong units, it's been way too long.

Answer 16

i did this similar on a test and failed it 10 questions just like these thats why i am getting this done so somebody can help me find what i did wrong. while also getting another assignment done :)

Answer 17

you know the change in temperature
u know mass
and C= 4.18

Answer 18

That's density, Kai. 1 kg/m^3

Answer 19

u took C as what? @Avenged7x

Answer 20

yeah lol @Kainui sleepy head ♥

Answer 21

well when you said 4.18 i remeber bunnies told me to always remember heat capacity of water is 4.179/g celsius. but that was one problem i couldnt figure out what c was until just now. when you reminded me

Answer 22

Actually I am right.

\[\Large C_{water}=1\frac{ calorie }{gram \ degree C}\]

Answer 23

Water is so common it's the standard for a lot of stuff lol =P

Answer 24

so that means it will look like this: 27.776 x 4.179 x 100.5 - 38.9?

Answer 25

yeah basically

Answer 26

is there anything else i have to do other than solving it out right like this?

Answer 27

*like it reads

Answer 28

@Kainui dk this one

Answer 29

nope, its only this much @Avenged7x

Answer 30

what was unit of you mass tho

Answer 31

coz it depend on it
if mass is in Kg, c= 4181
if mass is in g, c=4.18

Answer 32

it is grams

Answer 33

right good then :D

Answer 34

ok doing the problem as it reads i got 8093.04... is that right?

Answer 35

wrong

Answer 36

dear
its like this
Q= mc Delta T
= 27.776 * 4.179 * (100.5-38.9)

Answer 37

thats numerical part is what i put into my calculator. and i got 8093.04

Answer 38

nm i got 7150.28

Answer 39

i have a ti nspire cx cas so the parenthesis made a difference

Answer 40

lol yeah second one is right :)

Answer 41

ok thanks that makes sense now heres a medal!

Answer 42

:)