Question

please help i have a huge lab thats important!

Answer 1

@Nnesha @pooja195 @TheSmartOne

Answer 2

vague post

Answer 3

i know im sorry its just a lot to type out and get no one to help haha

Answer 4

its about enthalpy and such,

Answer 5

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

i have to use this equation: q water = m × c × ΔT.

it says assume that the specific heat capacity of water is 4.18 J / (g × °C) and the density of water is 1.00 g/mL.

ill give the data for the metal below, its aluminum

Answer 6

Measured mass of metal= 34.720g
Distilled water measurement =26mL
Distilled water temperature = 25.5 C
Temperature of metal = 100.5
Temperature of mixture = 41.6 C

Answer 7

I don't remember much chem, and it would take a while for me to refresh my memory... So let me tag some good chem helpers :)

@aaronq @Abhisar @JoannaBlackwelder @Australopithecus @abb0t @rushrw @zale101

Answer 8

okay thanks

Answer 9

@Rushwr *

Answer 10

u just multiply

Answer 11

ok I did some research to help you out...

c is the specific heat of water
m is the mass

so we have those values and so lets plug those in

Answer 12

i have to eat dinner so ill be back in 10-15 mins, if anyone comes to help sorry for making you wait!

Answer 13

not sure how we would calculate the change in temperature tho

Answer 14

Sorry I wish I understood this but I dont

Answer 15

I just figured it out

Answer 16

what do u think it is

Answer 17

all i know is the mass and the c part

Answer 18

wht do u think u do

Answer 19

plug in the numbers lol

Answer 20

but i dont know the T part at the end

Answer 21

I don't really know and I don't want to explain it to u wrong

Answer 22

.-. ok thanks anyways

Answer 23

Perhaps you should take into account the temperature change of the water, because heat is being absorbed by the water and thus the temperature is raised.

Answer 24

what? i dont really understand that :( i just need to find the T part, the last

Answer 25

@ganeshie8

Answer 26

@radar @mathmate @Data_LG2 plsss

Answer 27

@plohrb are you there?

Answer 28

yes im here

Answer 29

So the purpose/object of the experiment is to find the gain in heat of water or the specific heat of Aluminium?

Answer 30

yes

Answer 31

i first need to do the equation above, q = m c t

Answer 32

It's not a yes/no question!

Answer 33

oh i misread that, sorry

Answer 34

In an experiment, the first line is the objective.

Answer 35

its actually both, i need to find the energy change of the water (surroundings) and the specfic heat of the metal

Answer 36

Good, specific heat of Al was not mentioned in your previous posts.
Have you done calculations with mc\(\Delta\)T before?

Answer 37

no :c

Answer 38

m=mass
c=specific heat
\(\Delta\)T is temperature change.
So far so good?

Answer 39

yepp

Answer 40

Now let's make a table, and I want you to fill up the table from the given information you obtained from your lab.

Answer 41

ok

Answer 42

Remember that in chemistry, trailing zeroes are significant, means you need to write them and take them into account.