Calculations involving Specific Heat Worksheet, Exercises of Chemical Thermodynamics

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Specific Heat Worksheet Name (in ink): C = q/mAT, where q = heat energy, m = mass, and T = temperature Remember, AT = (Ténat — Vinita). Show all work and proper units. Answers are provided at the end of the worksheet without units. NO 1. A 15.75-g piece of iron 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron. eee ee ee CF 0.4% Pare 2. How many joules of heat are needed fo raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 Jig°C? Q = (0) (0.90)(S9-32) » las | : 3. To what temperature will a 50.0 g piece of glass raise if it gGsorbs $275 joules of heat and its specific heat capacity is 0.50 J/g°C? The initial temperature of the glass is 20.0°C. @solve for AT fost @ Ware. TE Te 5245 = (50)(0,.50) aT Al = Te - 20 Mee Oi) + eC; TS = 3 7] 4. Calculate the heat capacity of a piece of wood if 1500.0 g of the wood absorbs 6,75*10* joules of heat, and its temperature changes from 32°C to 57°C. (, Ux (move deci) (4500 = (1500)'c+ (64-22) , Ca 8 he! a 5. 100.0 pt of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4.18 J/g°C, calculate the amount of heat energy needed to cause Q 2 (100.0) (4.18) (34-4 ,0) > [15304 T | ———— = es = i