Question

Question 15 (1 point) Steam at 100° C is added to ice at 0° C. Find the amount of ice melted and the final temperature when the mass of steam is 7.00 g and the mass of ice is 50.0 g. 50.0 g, 11.7° C 40.0 g, 8.80° C 50.0 g, 8.80° C 30.0 g, 8.80°C 34.7 g 0°C

Answer 1

Question 15: Answer: to Required heat temperature melt of 50g amount the ice the A completely keeping is G = mlad unchanged 80 x 50 4000 cal where latent heat of ice, l= 80 callg. Rejected heat to con vert the temperature 7g Steam of at 100° c to coatera at Q'= ml' temperature, is + m's e 7 x 540 + 7x1 X 100 4480 cal where, latent heat of Steam , l' = 540 calla and specific heat , s = 1 callge since the pequi ped heat Q < sejected heat, a' then, the ice is melted completely. Novo the considera oc final temperature of Left) the mixture Requi ped heat to con verot oc tempera- ture to water 50 g ice at temperature at is 50 X 80 + 50 x 1 (0-0) 4000 + 500 Again 100°c the pejected heat temperature to is to convert 79 steam at the Water at loc temperature 7 X 540 + 7 X1 X (100) > Q'= 3780 + 700 - Q'= 4480 -70 70

Required heat, Q = Rejected heat, Q! 4000 + 500 4480 - 70 570 = 480 480 57 8. 42° c The amount of ice melted eDº 50 g and the final temperature is 8. 42° c nearly So, the currect option is 50.0 g. 8,80 ° C Ans