Question

Problem 2 (10 pts) Platinum is a transition metal used by the music industry to press their top selling records. It has a specific heat 0.133 J/g C. 24.0 grams of heated platinum are placed into 132 mL of water. The initial temperature of the water 25.2 °C. The specific heat of water is 4.184J/g °C and the density of water is 1.008 g/mL. During the course of this experiment, the sample of platinum loses 116.72 calories of energy (a) What is the final temperature at the end of the experiment? (5 pts) (b) What temperature was the platinum heated to? (5 pts)

Answer 1

question given in the As per Solution volume of water- 1320ml @ که شعر کو سار ه و ر ی از سر 3- * } ہو نے کا کنترل کی ملی را د مارگر بزرگ نم و heat سے بہتری کا عمل جا در heat gain by water = ms (Tz-T) Tea frogs Teng of د ے رہے تو اس که از | اس نے تین بار ا کہ 2- ما %3 5 پردے کہ 2 رو ہو Tz = 299. 08k. solving دیجیے

mass of pt = 24gm Speistic heat = 8:133 J/g • let initial Tempat hear Loss = ms (T-5) 2 116.72x4.1845 24x01133 (T-299.08) = 116.72x4-184 sowing T= 452,07 k initial Temperature of pt = 452107 k