Question

25. 30.0 g of 271.4°C liquid bismuth (Bi) is added to 80.0g of 25.00°C water in a perfectly insulated container. After the temperature equilibrates, the temperature inside of the container is 32.49°C. How much heat did bismuth lose during this process? Melting point of Bi = 271.4°C Cs (liquid H2O) = 4.18 J-gr1-K-1 Cs (solid Bi) 0.123 J gr1 K1 А. 0.139 kJ В. 0.882 kJ C. 0.909 kJ D. 2.50 kJ 4.22 kJ Е. I

Answer 1

there is no heat perfectly insulated means there is no heat contreinen is lost. Heat is transfermed from Hot liquid Bismith to water until thermal equilibrium. w established and Final tempratune of both becomes equal. Heat lost by liquid bsmith heat absorbed by welter z Muster Cutter (It-T:) water = 80.0gx 4.18 I (32.49 -25.00) goc = 2504.656 J . Heat lost by liquid bismi tha = 2.504656 kJ = 2:50 kg . * 12.50 ko]