A thin walled hollow aluminium cube 1.442m on a side contains 19.2kg of oxygen gas (o2) at 0 degrees C. The molar mass of oxygen gas is 32u. The volume coefficient of expansion, beta, for aluminum is 75x10-6/ degrees C. a) How many moles of oxygen are in the cube? b) what is the absolute pressure inside the cube? (first work out the volume of the cube). express your answer in atmospeheres (1 atm= 1.013x105N/m2) c) If you plae the cube in the over ( a large oven) raise its temp to 250 degrees C what is the volume of the hot cube? Use the formula for expanison V=Vo(1+beta delta T) d) what is the pressure of the oxygen in the warm, expanded aluminum cube? Assume the oxygen is also now at 250 degrees C. Express answer in atmospheres.

A thin walled hollow aluminium cube 1.442m on a side contains 19.2kg of oxygen gas (o2) at 0 degrees C. The molar mass of oxygen gas is 32u. The volume coefficient of expansion, beta, for aluminum is 75x10-6/ degrees C. a) How many moles of oxygen are in the cube? b) what is the absolute pressure inside the cube? (first work out the volume of the cube). express your answer in atmospeheres (1 atm= 1.013x105N/m2) c) If you plae the cube in the over ( a large oven) raise its temp to 250 degrees C what is the volume of the hot cube? Use the formula for expanison V=Vo(1+beta delta T) d) what is the pressure of the oxygen in the warm, expanded aluminum cube? Assume the oxygen is also now at 250 degrees C. Express answer in atmospheres.

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