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Advance Study Assignment: Heat Effects and Calorimetry 1. A metal sample weighing 147.90 g and at a temperature of 99.5°C was placed in 49.73 g of water in a calo- rimeter at 23.0°C. At equilibrium the temperature of the water and metal was 41.8°C. a. What was Ar for the water? (Ar final initial) 41.8°C - 230°C℃ b. What was Ar for the metal? 41.8-995 d. Calculate the specific heat of the metal, using Equation 3. 94₂0=8H₂₂ M₁₂₂ Ato = - SH m Mm Atm 9-4.18)(147.90)(-577) c. How much heat flowed into the water? (Take the specific heat of the water to be 4.18 J/g °C.) SH.M.LT > (4.188) (49.738) (18.88) e. What is the approximate molar mass of the metal? (Use Eq. 4.) 25 25 MM-3716°C) (55,6714) = 0007008 a. b. Calculate quo, using Equation 1. 18,8 0 Why? -57.7 c c. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). 3908 7.01x10 2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the solution went up to 50.1°C. Is this dissolution reaction exothermic?, 35,6714 joules joules/g°C 24 g/mol joules

Advance Study Assignment: Heat Effects and Calorimetry 1. A metal sample weighing 147.90 g and at a temperature of 99.5°C was placed in 49.73 g of water in a calo- rimeter at 23.0°C. At equilibrium the temperature of the water and metal was 41.8°C. a. What was Ar for the water? (Ar final initial) 41.8°C - 230°C℃ b. What was Ar for the metal? 41.8-995 d. Calculate the specific heat of the metal, using Equation 3. 94₂0=8H₂₂ M₁₂₂ Ato = - SH m Mm Atm 9-4.18)(147.90)(-577) c. How much heat flowed into the water? (Take the specific heat of the water to be 4.18 J/g °C.) SH.M.LT > (4.188) (49.738) (18.88) e. What is the approximate molar mass of the metal? (Use Eq. 4.) 25 25 MM-3716°C) (55,6714) = 0007008 a. b. Calculate quo, using Equation 1. 18,8 0 Why? -57.7 c c. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). 3908 7.01x10 2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the solution went up to 50.1°C. Is this dissolution reaction exothermic?, 35,6714 joules joules/g°C 24 g/mol joules

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section: Chapter Questions
Problem 113SCQ
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Experiment 14 Advance Study Assignment: Heat Effects and Calorimetry 1. A metal sample weighing 147.90 g and at a temperature of 99.5°C was placed in 49.73 g of water in a calo- rimeter at 23.0°C. At equilibrium the temperature the water and metal was 41.8°C. What was Ar for the water? (At=final initial) 41.8°C - 250°C a. b. What was Ar for the metal? 418-995 d. Calculate the specific heat of the metal, using Equation 3. 94-₂0=8H₂₂₂ Ato = - SH m Mm Atm 9-4.18)(147.90)(-577) e. What is the approximate molar mass of the metal? (Use Eq. 4.) 25 MM-SH5C) (55,6714) = 0007008 नाम) How much heat flowed into the water? (Take the specific heat of the water to be 4.18 J/g °C.) 9=SH; MART ⇒ (4,18³) (49.73.8) (18.88) S b. Calculate 20, using Equation 1. Why? 18,8 c. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). AH -577 d °C °C 3908 -4 g/mol 2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the solution went up to 50.1°C. a. Is this dissolution reaction exothermic? joules 35,671.4 joules/g c C 7.01 X10 joules ioulas
Transcribed Image Text:Experiment 14 Advance Study Assignment: Heat Effects and Calorimetry 1. A metal sample weighing 147.90 g and at a temperature of 99.5°C was placed in 49.73 g of water in a calo- rimeter at 23.0°C. At equilibrium the temperature the water and metal was 41.8°C. What was Ar for the water? (At=final initial) 41.8°C - 250°C a. b. What was Ar for the metal? 418-995 d. Calculate the specific heat of the metal, using Equation 3. 94-₂0=8H₂₂₂ Ato = - SH m Mm Atm 9-4.18)(147.90)(-577) e. What is the approximate molar mass of the metal? (Use Eq. 4.) 25 MM-SH5C) (55,6714) = 0007008 नाम) How much heat flowed into the water? (Take the specific heat of the water to be 4.18 J/g °C.) 9=SH; MART ⇒ (4,18³) (49.73.8) (18.88) S b. Calculate 20, using Equation 1. Why? 18,8 c. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). AH -577 d °C °C 3908 -4 g/mol 2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the solution went up to 50.1°C. a. Is this dissolution reaction exothermic? joules 35,671.4 joules/g c C 7.01 X10 joules ioulas
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