What is the minimum amount of steam initially at(100oC), that one needs to add to a 10g ice (initally at-10oC) in order for ALL the ice to be melted? The relevant constants are: Lf = 3.33 * 102 J/g Lv = 22.6 * 102 J/g Cwater = 4.186 J/g oC Cice = 2.1 J/g oC Pls help me someone, and I promise to give the highest rates:D What is the minimum amount of steam initially at(100oC), that one needs to add to a 10g ice (initally at-10oC) in order for ALL the ice to be melted? The relevant constants are: Lf = 3.33 * 102 J/g Lv = 22.6 * 102 J/g Cwater = 4.186 J/g oC Cice = 2.1 J/g oC Pls help me someone, and I promise to give the highest rates:D
Explanation / Answer
The basic eqn is conservation of energy. Heat gained by the ice = Heat lost by the steam. mice cice T + mice Lf = msteam Lv (10) (2.1) (10 ) + (10) (333) = m (2260 ) Solve for mass of steam to get m = 1.57grams.