Question

@Legends

Answer 1

Im so confuseD:(

Answer 2

me too -.-

Answer 3

But wait let me see

Answer 4

ok

Answer 5

Let's start with the first table. What's the mass of the water? Btw, you're expected to know that the density of water is 1 g/mL.

Answer 6

how do we find that?

Answer 7

@matt101

Answer 8

You know the density of water is 1 g/mL, and they give you the volume of water in the question (1000 mL). You need to find the mass of water.

You can tell from the units for density that Density = Mass / Volume. We want mass, so let's rearrange that equation: Mass = Volume x Density. What is the mass you get?

Answer 9

wait wouldnt it be 1000?

Answer 10

Absolutely right! 1000 g of water.

The heat capacity (c) of water is provided at the top of the page, 4.18 J/ (g °C). The change in temperature is the final temperature of the water minus the initial temperature of the water.

What is the change in temperature?

Answer 11

Alright. When it comes to energy changling solution, your 'm' or mass is the volume of water or acid in cm^3 or mL. And atis the temperature change.
So your answer will be like E=mcT= 1000*4.18*(23.7-20.0)=15466J or 15.466KJ.

Answer 12

As for number 2, you use the same methodology for both corn and tomatoes.

Answer 13

wait so is that the change in temp?

Answer 14

Yes, 23.7-20.0

Answer 15

I have those...

Answer 16

Hiiiiiiiiiiiiiz

Answer 17

Adajia did you finish?

Answer 18

no -.-

Answer 19

Didnt he answer it

Answer 20

answered

Answer 21

yeah the first part but i finished it now

Answer 22

YESSSSSSSSS! Did I help or nahh

Answer 23

hardly. Everyone else that commented helped haha