# Tutorial 2 - UNIVERSITI TEKNIKAL MALAYSIA MELAKA FAKULTI...

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UNIVERSITI TEKNIKAL MALAYSIA MELAKA FAKULTI KEJURUTERAAN MEKANIKAL BMCG 2713 – THERMODYNAMICS TUTORIAL 2 PROPERTIES OF PURE SUBSTANCES 1. What is the difference between saturated vapor and superheated vapor? 2. Is it true that water boils at higher temperatures at higher pressures? 3. A mother is cooking beef curry for her family in a pan that is: a) uncovered b) covered with light lid c) covered with a heavy lid For which case will the cooking time be the shortest? Why? 4. Can quality be expressed as the ratio of the volume occupied by the vapor phase to the total volume? 5. Complete the following table for H 2 O: T [ o C] P [kPa] h [kJ/kg] x Phase Description 325 0.4 160 1682 950 0.0 80 500 800 3161.7 6. Complete the following table for H 2 O: T [ o C] P [kPa] u [kJ/kg] Phase Description 325 2452 170 Saturated Vapor 190 2000 4000 3040 7. A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4 kg lid, If the local atmospheric is 101 kPa, determine the temperature at which the water will start boiling when it is heated.

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