Question

I am having dificutly wwith density and slope.
I have to figure out the mass, volume, and density.
I have attached the sheet with the question.

Answer 1

I need help with question 1 a) b) c) & d)

Answer 2

The first three questtion you can read directly from the graph:
a) 30 g
b) 25 ml
c) 45 g

Answer 3

For question d:
Density is how much mass there is per volume, that is, if you got X grams in Y mililitres, you have a density of X/Y g/ml

Answer 4

i got a) 35 b) 50 c) 60

Answer 5

How did you get those results?

Answer 6

I looked at where the dots were
OH WAIT ! i think im look at mass !

Answer 7

looking *

Answer 8

wait, i have no idea what im doing !

Answer 9

For example, for 40 mL substance A I looked at how high the line was at the 40mL mark, and it seems it is 30g high

Answer 10

OHHHHHHHHHHH

Answer 11

but i still don't get what to do for d) ?

Answer 12

ok :P now, see what I wrote before? Density is how much mass there is per volume, that is, if you got X grams in Y mililitres, you have a density of X/Y g/mL, are you following?

Answer 13

Using the previous answers, for example for substance A we have there are 30g in 40 mL, therefore, it has a density of 30/40 g/mL

Answer 14

(or three quarters grams per mililitre)

Answer 15

don't you divide or multipy the thing ?

Answer 16

yeah, density is mass divided by volume (g/mL)

Answer 17

what substances am I supposed to find the density of ?

Answer 18

All three of them :P I did for A, now you can do it for B and C, you just have to divide the respective masses and volumes

Answer 19

ok

Answer 20

thank -you ! :}

Answer 21

Tell me what you got when you are ready :)

Answer 22

ok

Answer 23

density of the substances
a) 0.75 b) 1 c) 1.5

Answer 24

That's what I got :) and you will also notice, that those are alse the values of the respective slopes in the graph ;)

Answer 25

*also

Answer 26

ohhhhhhhh

Answer 27

IM SO SMART :)

Answer 28

Hehehe, cheers, mate, nice work :P

Answer 29

LOOL, Thanks for the help :D

Answer 30

No probs ;)