CookieMonster101
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.
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CookieMonster101
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I need help with question 1 a) b) c) & d)
CptnChiguire
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The first three questtion you can read directly from the graph:
a) 30 g
b) 25 ml
c) 45 g
CptnChiguire
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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
CookieMonster101
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i got a) 35 b) 50 c) 60
CptnChiguire
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How did you get those results?
CookieMonster101
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I looked at where the dots were
OH WAIT ! i think im look at mass !
CookieMonster101
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looking *
CookieMonster101
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wait, i have no idea what im doing !
CptnChiguire
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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
CookieMonster101
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OHHHHHHHHHHH
CookieMonster101
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but i still don't get what to do for d) ?
CptnChiguire
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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?
CptnChiguire
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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
CptnChiguire
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(or three quarters grams per mililitre)
CookieMonster101
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don't you divide or multipy the thing ?
CptnChiguire
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yeah, density is mass divided by volume (g/mL)
CookieMonster101
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what substances am I supposed to find the density of ?
CptnChiguire
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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
CookieMonster101
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thank -you ! :}
CptnChiguire
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Tell me what you got when you are ready :)
CookieMonster101
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density of the substances
a) 0.75 b) 1 c) 1.5
CptnChiguire
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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 ;)
CptnChiguire
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*also
CookieMonster101
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ohhhhhhhh
CookieMonster101
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IM SO SMART :)
CptnChiguire
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Hehehe, cheers, mate, nice work :P
CookieMonster101
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LOOL, Thanks for the help :D
CptnChiguire
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No probs ;)