Answer:
The mass of aluminum is 124.72 g
Explanation:
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is the amount of energy that causes a change in the temperature of a substance. In other words, sensible heat is that heat that causes the temperature of an object to vary without affecting its molecular structure and therefore its physical state. Its mathematical expression is:
Q = c * m * ΔT
where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature.
In this case:
Replacing:
900 J= 0.902 [tex]\frac{J}{g*K}[/tex] *m* 8 °K
900 J= 7.216 [tex]\frac{J}{g}[/tex] *m
[tex]\frac{900 J}{7.216\frac{J}{g} } =m[/tex]
124.72 g=m
The mass of aluminum is 124.72 g
