I'm having trouble with these formulas.

	1 washer	2 washers	3 washers
Mass water, mwater, (g)	40.04	40.04	40.04
Initial temp water, Tinitial water, (C)	20.0	20.0	20.0
Final temp water, Tfinal, (C)	29.0	33.0	39.0
Temperature change,Twater, (C)	9.0	13.0	19.0
Specific heat - water, Cs water, (J/g C)	4.184	4.184	4.184
Metal mass, mmetal, (g)	18.00	33.53	49.58
Initial temp metal, Tinitial metal, (C)	100	100	100
Final temp metal, Tfinal, (C)	29.0	33.0	39.0
Temperature change, Tmetal, (C)	71.0	67.0	61.0
Calculated specific heat of metal, cs metal, (J/g C)
Average specific heat of metal, cs metal, (J/g C)	0.00
Specific heat of steel, cs steel,(J/g C)	0.5
Percent Error (%)	100.00