Rubbing alcohol is used to disinfect wounds and surfaces. It has the following properties: Melting point: -88.5C Boiling point: 82.3C Latent heat of fusion: 8.94 x 104 J/kg Latent heat of vaporization: 6.66 x 105J/kg Specific Heat Capacities: Solid: 1.95 x 10³ J/kg C Liquid: 2.37 x 10³ J/kg C Vapor: 2.74 x 10³ J/kg C a) You decide to heat up 250 g of rubbing alcohol in a pot, after having cooled it to -5C in the freezer. How much energy will it take to heat the rubbing alcohol to 90C? [4] Include a heating curve graph in your submitted solutions [1] b) You let the 250 g of rubbing alcohol cool in the pot, then add a 50 g piece of copper at -2C and close the lid. After leaving the lid closed for awhile, you measure the final temperature as 41C. What was the initial temperature of the rubbing alcohol? (specific heat of copper is 390 J/kg°C) [3] For your answers below enter 3 significant digits ONLY (no units here; include them instead in full solutions).

Rubbing alcohol is used to disinfect wounds and surfaces. It has the following properties: Melting point: -88.5C Boiling point: 82.3C Latent heat of fusion: 8.94 x 104 J/kg Latent heat of vaporization: 6.66 x 105J/kg Specific Heat Capacities: Solid: 1.95 x 10³ J/kg C Liquid: 2.37 x 10³ J/kg C Vapor: 2.74 x 10³ J/kg C a) You decide to heat up 250 g of rubbing alcohol in a pot, after having cooled it to -5C in the freezer. How much energy will it take to heat the rubbing alcohol to 90C? [4] Include a heating curve graph in your submitted solutions [1] b) You let the 250 g of rubbing alcohol cool in the pot, then add a 50 g piece of copper at -2C and close the lid. After leaving the lid closed for awhile, you measure the final temperature as 41C. What was the initial temperature of the rubbing alcohol? (specific heat of copper is 390 J/kg°C) [3] For your answers below enter 3 significant digits ONLY (no units here; include them instead in full solutions).

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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