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| Math Central | Quandaries & Queries |
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Question from Jordan, a student: In Chemistry we are doing a lot of problems that are much more math related than anything. One of my questions reads: A certain medallion has a mass of 55.64 g. When placed in 75.2 mL of water in a graduated cylinder, This is due tomorrow, and I've already given up on actually getting this worksheet done, so all i really want to know is how to work out a problem like this. I don't even know where to begin, my teacher is about worthless to put it nicely. I have a test over this on Monday and I just really want to know how to work problems like these. Like how can i tell the density by how much water is displaced...oh idk. I just need help please. thank you Jordan |
Hi Jordan,
By the fact that the water level in the graduated cylinder went up from 75.2 mL to 77.8 mL means that the volume of the medallion is 77.8 - 75.2 mL = 2.6 mL. Thus the medallion has a mass of 55.64 g and a volume of 2.6 mL so what's it's density?
Penny
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