An unknown substance has a mass of 29.5 g. The temperature of the substance increases by 20.9C when 237J of heat is added to the substance. The table lists the specific heats of select substances. What is the most likely identity of the unknown substance? Substance lead silver copper Specific heat (J/g. "C)] 0.128 0.235 0.385 0.449 0.903 4.184 copper iron aluminum aluminum water iron water silver lead