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2. Find the heat transferred when 6105 g of ethylene glycol (C = 2.42 J/g °C) when a car radiator cools from 37.0 °C to 25.0 °C.

2. Find the heat transferred when 6105 g of ethylene glycol (C = 2.42 J/g °C) when a car radiator cools from 37.0 °C to 25.0 °C.

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.53PAE: 9.53 Using these reactions, find the standard enthalpy change for the formation of 1 mol of PhO(s)...
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Name Period Date Specific Heat Capacity 1. A layer of copper welded to the bottom of a skillet weighs 125 g. How much heat is needed to raise the temperature of the copper layer from 25 °C to 300 °C? The specific heat capacity (C) of Cu is 0.387 J/g °C. 9= 0.387J x 125 x (300-25)°C = 1.33×104) 9 K 2. Find the heat transferred when 6105 g of ethylene glycol (C = 2.42 J/g °C) when a car radiator cools from 37.0 °C to 25.0 °C. à mon noto g 8.82 shod of forispor one zotol you woll 3. In a purity check for industrial diamonds, a 10.25 - carat (1 carat = 0.2000g) diamond is heated to 74.21 °C and immersed in 26.05 g of water in a constant- pressure calorimeter. The initial temperature of the water is 27.20 °C. The final temperature of the system is 27.65 °C. Calculate the specific heat of the diamond. 4. A 27.7 g sample of ethylene glycol loses 688 J of heat. What was the initial temperature of the ethylene glycol if the final temperature is 32.5 °C. (C of ethylene glycol = 2.42 J/g °C)
Transcribed Image Text:Name Period Date Specific Heat Capacity 1. A layer of copper welded to the bottom of a skillet weighs 125 g. How much heat is needed to raise the temperature of the copper layer from 25 °C to 300 °C? The specific heat capacity (C) of Cu is 0.387 J/g °C. 9= 0.387J x 125 x (300-25)°C = 1.33×104) 9 K 2. Find the heat transferred when 6105 g of ethylene glycol (C = 2.42 J/g °C) when a car radiator cools from 37.0 °C to 25.0 °C. à mon noto g 8.82 shod of forispor one zotol you woll 3. In a purity check for industrial diamonds, a 10.25 - carat (1 carat = 0.2000g) diamond is heated to 74.21 °C and immersed in 26.05 g of water in a constant- pressure calorimeter. The initial temperature of the water is 27.20 °C. The final temperature of the system is 27.65 °C. Calculate the specific heat of the diamond. 4. A 27.7 g sample of ethylene glycol loses 688 J of heat. What was the initial temperature of the ethylene glycol if the final temperature is 32.5 °C. (C of ethylene glycol = 2.42 J/g °C)
Name THROW WS Heat of reaction Use the given standard enthalpies of formation to determine the heat of reaction of the following reaction: Note Heat of formation of elements is 0. AH N₂H₁ (1) = +50.6 kJ/mole ΔΗ, Η,Ο(1) = -285.9 kJ/mole 20he as AH°f CO₂ (g) = -393.5 kJ/molesnifiqob nohtsupe iema C₂H₂O (1) = -249.5 kJ/mole- AH, AH CS₂ (g) = +177.4 kJ/mole AH SO₂ (g) = -296.8 kJ/mole AH1 CH₂2 (1) = -156.4 kJ/mole / 1. N₂H₂(1) + O₂(g) →N₂(g) + 2 H₂O(1) 1.45435 maks. 32.04476 HC-604 Xx 20 2291344miga nist biss to not sitt troline 2 not 4.03136 ton 10 barovelvilsaimen boment 2. C3H₂O(1) +4 O₂(g) →3 CO₂(g) + 3 H₂O(1) ribelgo visv, 229h OH 3. CS₂(1) + 3 O₂(g) →→CO₂(g) +2 SO₂(g) . The combustion of cyclohexane C6H₁2. slom or pielusies noitemnotni zid nizu 12 to (HA) noitsmhol Net Profit
Transcribed Image Text:Name THROW WS Heat of reaction Use the given standard enthalpies of formation to determine the heat of reaction of the following reaction: Note Heat of formation of elements is 0. AH N₂H₁ (1) = +50.6 kJ/mole ΔΗ, Η,Ο(1) = -285.9 kJ/mole 20he as AH°f CO₂ (g) = -393.5 kJ/molesnifiqob nohtsupe iema C₂H₂O (1) = -249.5 kJ/mole- AH, AH CS₂ (g) = +177.4 kJ/mole AH SO₂ (g) = -296.8 kJ/mole AH1 CH₂2 (1) = -156.4 kJ/mole / 1. N₂H₂(1) + O₂(g) →N₂(g) + 2 H₂O(1) 1.45435 maks. 32.04476 HC-604 Xx 20 2291344miga nist biss to not sitt troline 2 not 4.03136 ton 10 barovelvilsaimen boment 2. C3H₂O(1) +4 O₂(g) →3 CO₂(g) + 3 H₂O(1) ribelgo visv, 229h OH 3. CS₂(1) + 3 O₂(g) →→CO₂(g) +2 SO₂(g) . The combustion of cyclohexane C6H₁2. slom or pielusies noitemnotni zid nizu 12 to (HA) noitsmhol Net Profit
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