## CookieMonster101 4 years ago 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.

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

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

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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

i got a) 35 b) 50 c) 60

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How did you get those results?

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

looking *

wait, i have no idea what im doing !

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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

OHHHHHHHHHHH

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

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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?

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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

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(or three quarters grams per mililitre)

don't you divide or multipy the thing ?

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

what substances am I supposed to find the density of ?

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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

ok

thank -you ! :}

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Tell me what you got when you are ready :)

ok

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

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

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*also

ohhhhhhhh

IM SO SMART :)

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Hehehe, cheers, mate, nice work :P

LOOL, Thanks for the help :D

31. CptnChiguire

No probs ;)