Questions and Answers - Amount of Heat , Melting Point

? Find the amount of heat required 10 convert ice at a -5°C in1o steam at 100°C. if mass of ice is 50g ? ans: Figure -5°C 0°C 0°C 100°C -) 100°C ice ice water water steam Q MSAT Q2=mLs c 50x0.5x5 to 50x80 $ 25xg = 4000cal = 125cal 93 = MSOT Q6=mlv = BOXI x100 =50x540 - +080 = 5000 cap = 27000 cal Q = 125+ 4000+ 5000+ 27000= 36125 cal Answer is 36125 cap ? IS 4000 g of cu piece is 500°C placed on at 5E is pt- acecton a large block of ice at 0°C. Find how muchice will metted? ans (s of is an S : final temproc

7500°C Q if MSAT 1" 400x 0.42 X 500 e mL f 400x0.42x500 =mx 335 (00x0.42x500 m 335 1= 400x5x 42 16 800 = 335 67 250.79