Need Help with Finding Density of Unknown Solid

Chemistry
Tutor: None Selected Time limit: 1 Day

I need to find the density of an unknown solid. I have the mass and the volume but IDK if it is right....

Oct 3rd, 2015

Hi, thank you for the opportunity to help you with your question!

Density of a solid is given by the equation: 

density = mass/volume. 

This equation should give you the answer you require.


Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 20th, 2015

I know this, but I am not sure if my #'s are right...I did this in lab.


mass of flask with unknown metal = 40.3680g

mass of flask with unkown metal and water = 68.7555 g

the volume of flask 29.933 mL

the density was given to us, says density of water 0.99785 g/cm^3


idk if i am claculating correctly though...

Sep 20th, 2015

i am not sure of the volume calculation...

Sep 20th, 2015

Hi,


(1) Calculate mass of water =  68.7555 - 40.368 = 28.3875g

(2) Calculate volume of water = mass/density = 28.3875/0.99785 = 28.449ml

(3) Calculate volume of metal = 29.933 - 28.449 = 1.484ml

(4) Calculate density of metal = mass/volume = 40.368/1.484 = 27.202 g/cm^3 

Sep 20th, 2015

what would be the mass of solid

Sep 20th, 2015

That is provided in the question (40.368gm?)

Sep 20th, 2015

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