A0.5775−g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 3024 j/°c. the temperature increases by 4.729°c. (a) calculate the heat associated with the burning mg in kj/g. kj/g (b) calculate the heat associated with the burning of mg in kj/mol. kj/mol

The heat associated with the burning Mg is 24.76 kJ/g.

The heat associated with the burning Mg is 595.85 kJ/mol.

Explanation:

Heat capacity of bomb calorimeter = C = 3024 J/°C

Change in temperature of  bomb calorimeter = ΔT=4.729°C

Heat gained by calorimeter = Q

Mass of magnesium burnt =  0.5775 g

Moles of magnesium =

0.5775 grams of magnesium on burning produces 14.300 kJ.

Then 1 gram of magnesium will produce:

The heat associated with the burning Mg is 24.76 kJ/g.

0.0240 moles of magnesium on burning produces 14.300 kJ.

Then 1 molof magnesium will produce:

The heat associated with the burning Mg is 595.85 kJ/mol.

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