Hey guys I really need some help! Trial 1: Mass of cold water: 50mL Temp of cold
ID: 1051644 • Letter: H
Question
Hey guys I really need some help!
Trial 1:
Mass of cold water: 50mL
Temp of cold water: 23.5 C
Mass of hot water: 50mL
Temp of hot water: 62.4 C
Temp of mixed water: 52.0 mL
Trial 2:
Mass of cold water: 50mL
Temp of cold water: 24.0 C
Mass of hot water: 50mL
Temp of hot water: 62.8 C
Temp of mixed water: 51.9 C
Calculate the calorimeter constant for trial 1 and trial 2. For this question, I originally got the answer 364J/C for trial 1 and 326 J/C for trial 2, but my lab checker says they are both incorrect.
Explanation / Answer
From Trial 1,
Heat gained by calorimeter = 50 x 4.184 x (52 - 23.5) - 50 x 4.184 x (62.4 - 52)
= 3786.52 J
calorimeter constant = 3786.52/28.5 = 132.860 J/oC
From Trial 2,
Heat gained by calorimeter = 50 x 4.184 x (51.9 - 24) - 50 x 4.184 x (62.8 - 51.9)
= 3556.4 J
calorimeter constant = 3556.4/27.9 = 127.470 J/oC