Question

Experiment 25: Calorimetry Pre-Lab

4. The specific heat of the metal was determined following Part A of the Experimental Procedure in this experiment Complete the following table for Trial 1 (See Report Sheet.) for determining the specific heat of the metal. Recond the calculated values with the cormect mumber of significant Eigures 1. Mass of metal () 2. Temperature of mesalco 5. Mass of water (g) 6. Temperature of water "C 7. Matimum temperature of waser C) 209.- Part 2 220 Calculations for Specific Heat of a Metal 1. Temperature change of water. ATC) 2. Heat gained by water 3. Temperature change of metal, AT C) 4 Specific heat of metal 'C) Equation 253 5. The enthalpy of solution for the dissolving of a KBer sample was determined following Part Cof the Experimental Po cedure in this experiment. Complete the following table for Trial 1 (See Report Sheet.) for determining the enthalpy of solution of KBe 5.00 Part 2 1. Mass of salt (g) 2. Moles of salt (mot) 5. Mass of water ) 6. Initial temperature of water 25.0 25.0 7. Final temperature of mixture Co Part 4 Calculations for Enthalpy (heat) of Solution for the Dissolution of a Salt 1. Temperature change of solution, rc 2. Heat change of water (D Show calculation 3. Heat change of salt (J sp. ht. of 4. Total enthalpy change, equation 25.11 U) 5. ??,Uhnol salt) KBr 0.439 gC Show calculasion Equation 25 1:2 Show calculation 300 Calorimetry

Answer 1

Cr 2 119 ms Naas durs Enthal ·そ37-25 . 042

temperature 82 6.9 2 Heat chane f Datu 2 m Heat change o sa lt 5 x 439 X 6.9 2 Is.IS Jotal ern raakpy change Z 722-1 j t-is.is. 」 11-737-25 T

ㄒ ete) (24.6-22)( 2.6' 2 ゾ17 a 1083-4 J (99.4-24-6) ( 2 temperstrt chenge Daren a 20 ,94 x 18