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  • Question - Mass, Density and Volume

    Lance Michael Farrar

    Member

    Updated: Oct 27, 2024
    Views: 29.3K
    I need some info. A single atom of Carbon has a Mass, Density and Volume at room temperature. How do these change when that Atom is moved to a temperature of -253c. Example; If the Mass, Density and Volume were each arbitrarily given the value of 1 at room temperature - what {if any} would be the % of change when that Atom is moved to -253c?
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Replies

  • Ramani Aswath

    Member • Sep 2, 2015

    A single atom does not have a density as defined for bulk matter.
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  • Lance Michael Farrar

    Member • Sep 2, 2015

    What about Volume?
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  • Lance Michael Farrar

    Member • Sep 2, 2015

    Does it have Volume and if so does that change?
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  • Ramani Aswath

    Member • Sep 2, 2015

    This may help:
    #-Link-Snipped-#
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  • Lance Michael Farrar

    Member • Sep 3, 2015

    Thank you.
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  • Lance Michael Farrar

    Member • Sep 3, 2015

    A.V.Ramani
    This may help:
    #-Link-Snipped-#
    Thank you. I didn't see a reference to temperature in the equations. Does that mean that an atom of Carbon has the exact same volume at -253c as it does at room temperature? The reason for asking is that if the volume is lower at -253c then more of them can be held in a smaller space. If they can be contained within that space and brought up to room temperature then the product would have a higher density. Thanks again, Lance
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  • Ramani Aswath

    Member • Sep 4, 2015

    The volumetric coefficient of thermal expansion for diamond is about 0.000003 which means that at -253degC it will contract to (1 - 0.000760) times the volume at 0 degC.
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  • Lance Michael Farrar

    Member • Sep 4, 2015

    It sounds like the volume of a single Carbon atom at room temperature is the same whether it is in the form of a lump of coal or in a Diamond. and it is also the same at -253c.
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  • Lance Michael Farrar

    Member • Sep 4, 2015

    The volume of a single carbon atom is the same whether it is in a Diamond or piece of coal?
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  • Ramani Aswath

    Member • Sep 4, 2015

    Coal is a mix of various things, not just carbon.
    [​IMG]

    This gives specific info on the various carbon allotropes:
    #-Link-Snipped-#
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  • Lance Michael Farrar

    Member • Sep 4, 2015

    Thank you for your input.
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