Question

***WILL FAN AND MEDAL***

Can somebody help me with my lab?

Answer 1

\(\Huge\bigstar\color{DarkViolet}{^Can~^Some_1~^Help~^Me?}\bigstar\)

Answer 2

\[\Huge\bigstar\color{DarkViolet}{^Sorry~^No~^Time!}\bigstar\]

Answer 3

we can work through it together. What have you done so far?

Answer 4

Ugh nothing No clue what to do :p

Answer 5

@aaronq

Answer 6

first you need to fill that table.

to find the energy you multiply the mass of the water (in this case because the density is assumed to be 1 g/mL, 1000 mL = 1000 g), times the specific heat capacity, times the change in temperature.

The change in temperature is the difference between the final and the inital temps.

\(\huge \Delta T=T_f-T_i\)

Answer 7

ok um how do I do that exactly? I am so confused :p

Answer 8

have you read the paragraph?

it's all given there

Answer 9

yah but im still sooooooooo confused ugh... :p I'm sorry

Answer 10

@aaronq

Answer 11

read the paragraph you need

mass of water (which is the volume of water)
specific heat capacity of water
change in temperature for the water (increase or decrease)

report these back

Answer 12

Heat capacity would be 4.18? right?

Answer 13

@aaronq

Answer 14

yes

Answer 15

Okay now what?

Answer 16

@aaronq

Answer 17

you need:

mass of water (which is the volume of water)
specific heat capacity of water \(\checkmark\)
change in temperature for the water (increase or decrease)

Answer 18

1,000 mL's
23.70

Answer 19

Looks good so far.

Answer 20

Thanks :D

Answer 21

@aaronq
but thnx @Ajohnson2199

Answer 22

okay, now follow the formula provided, \(q=m*C*\Delta T\)

multiply these three values together, it will give you the heat, q.

Answer 23

OK :)
What about after that?

Answer 24

What are you trying to look for now?

Answer 25

Now for the second part fo the same question, you divide the heat, q, by the mass of sodium hydroxide used.

Answer 26

ok

Answer 27

After that ? @aaronq

Answer 28

so the table in 2. follows the exact same concept as the first.

identify the mass of water used, multiply it by the heat capacity and the change in temperature.

Note that this occurs twice, once for the chips and once for the tomatoes - each has a difference change in temperature,

Answer 29

Okay Im confused once again 0_o

Answer 30

@aaronq

Answer 31

it's the same thing as in the first question.

multiply the mass of the water used by specific heat capacity of water and the change in temperature to find the heat, q

Answer 32

okay

Answer 33

And after that? @aaronq

Answer 34

Convert the heat, q, from Joules to kilojoules.

you do this by dividing the heat by 1000 because 1000 J= 1 kJ

Then you divide by heat by the mass for each substance burned.

Answer 35

ok Thanks :D

Answer 36

@aaronq

Answer 37

no problem!

Answer 38

XD