Question

The temperature of a sample of water in the liquid phase is raised 20.0oC by the addition of 4254 J. What is the mass of the water?

Answer 1

For this you need to use: \(\sf q=m*C_p*\Delta T\)

which means, \(\sf heat=mass*Specific~heat~capacity*Change ~in Temp\)

here the mass refers to the mass of water and the heat is the energy (4254 J)

The specific heat capacity is 4.184 J/g\(^oC\) (i suggest you write this one down somewhere as it's almost used in every question).