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    Aluminum Metal Volume

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    Alumminum metal melts at 660 degree Celsius and boils at 2450 degree C. Its density is 2.70 grams/cc. Calculate the following:

    the volume occupied by 15 milligrams of aluminum vapor at its boiling point and under a pressure of 1140 torr.

    the volume occupied by 100 kilograms of the metal at 25 C.

    If the specific heat capacity of aluminum metal is .89 Joules per gram-degree C, how many Joules of energy are required to heat 10 kilomoles of aluminum from 250 degree C to 500 degree C.

    If the mass in part 1 of this problem is subject to 100 atmospheres pressure at the boiling point, what would the volume be (assume an ideal gas)

    If the mass in part 1 was dissolved in an excess of aqueous HCl, what colume of hydrogen gas would be released at STP?

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    Solution Preview

    Alumminum metal melts at 660 degree Celsius and boils at 2450 degree C. Its density is 2.70 grams/cc. Calculate the following:
    1. The volume occupied by 15 milligrams of aluminum vapor at its boiling point and under a pressure of 1140 torr.
    V = nRT/P
    Here, P = 1140 torr = 1140/760 atm = 1.5 atm, T = 2450+273.16 = 2723.16K,
    R = 0.0821 l-atm/mol-K
    n = 0.015/27 = 0.000556
    Therefore, ...

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    $2.19