If 213 J raises a sample of water 8.2°C, what is the mass of the water?
Use the formula
q = heat absorbed or released, in joules (J)
m = mass
C = specific heat capacity (for water, it is
ΔT = change in temperature
Plug known values into the formula.
The answer, expressed in 2 significant figures, is 6.2 g.
Hope this helps!