Question

An unknown mass of aluminum requires 6290 joules to raise the temperature from 23.9 degrees c to 80.0 degrees c what is the mass of aluminum.Aluminum: 0.900 J/g°C.

Answer 1

To relate the change in temperature of a mass of certain material with the given heat, we can use the following equation:

`q=m\cdot c\cdot\Delta T`

Where q is the heat, m is the mass, c the heat capacity of the material and ΔT is the temperature variation.

So, we can solve for m and substitute the kown values:

`m=(q)/(c\cdot\Delta T)=(6290j)/(0.900j/g\degree C\cdot(80.0-23.9)\degree C)=(6290)/(0.900\cdot56.1)g\approx125g`

So, the mas of aluminium is approximately 125g.