120 mL of H2O is initially at room temperature (22 °C), A chilled steel rod at 2.0 °C is placed in the water. If the final temperature of the system is 21.1 °C, what is the mass of the steel bar?
Specific heat of water = 4.18 J/(g °C)
Specific heat of steel = 0.452 J/(g °C)
Express your answer numerically in grams, to one significant figure.