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Topic: Beginner chem question regarding density  (Read 2306 times)

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Offline noiseordinance

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Beginner chem question regarding density
« on: October 02, 2010, 09:50:34 PM »
Hi. I took a year of chemistry over a year ago. Now it's my sister's turn. She called with the following question...

"A 50g cube is added to 20 C water (density 0.99821 g/cm3)... the block weighs 5.6g in the water. What is the density?"

Now, she had mentioned the only formula the book shows is d=m/v, but I suggested that the temperature of the water would have to be plugged in somewhere else, whether that be a chart for specific gravity, or another formula. So, is this problem solvable with ONLY the d=m/v formula, or is another formula needed? If so, which formula?

Well, back to MY OWN homework. :)

Offline Borek

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Re: Beginner chem question regarding density
« Reply #1 on: October 03, 2010, 04:11:28 AM »
You can safely ignore temperature - it was already used when looking for specific gravity of water.
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