HELP 1 Density-volume question?

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An unknown liquid with a mass of 26.366g and a volume of 25.24 mL is being analyzed to identify its substance among trichlorobenzene, acetone, and chloride based on density. Calculating the density yields a result that suggests the liquid is likely acetone. For the second part of the question, if the substance were water with a density of 0.9982 g/mL, the new volume needs to be determined using the formula V = m/d. The discussion emphasizes the importance of correctly applying the density formula and clarifying units. Ultimately, the participants seek confirmation on their calculations and understanding of density.
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HELP! 1 Density-volume question!??URGENT!

Homework Statement


1.An unknown liquid has a mass of 26.366g and volume of 25.24 x10^-3 liters at 25'C.
Identify the likely substance from the following information.

Substance tricholorobenzene (density:1.454g/mL)
acetone (density: 1.049g/mL)
chloride( denisty: .8862g/mL)

2. If the substance had been water with a density of .9982g/mL at 25'C, what would be its new volume?

Homework Equations



g/mL

The Attempt at a Solution


1.26.366g/(25.24ml) => acetone
2. i have no idea...g/mL density .9982g/mL

Please HELP!
 
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What is density definition?
 


g/mL =density =mass/volume? intensive physical property!
please help!
 


Right.

d = \frac m V

You are given mass, you are given density - solve for V.
 
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is the answer for 1 acetone?
is the answer for 2 25.19ml?

I know the formula already;;;;g/ML
 


SAT2400 said:
is the answer for 1 acetone?
is the answer for 2 25.19ml?

1 - yes, 2 - no.

I know the formula already;;;;g/ML

That's not the formula. That's - at best - density unit.

Slow down. Solve for V. Write it using symbols that I have used earlier.
 
Last edited by a moderator:
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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