Chapter 21 to 24 Homework Solutions

Chapter 21 Homework

Problem Answer Problem Answer

#1 0 ºC #13 15,840 cal

32 ºF 3.96 ºC

273 K 13.96 ºC

#2 100 ºC #14 18.5 ºC

212 ºF #15 1600 cal

373 K 128 cal

#3 4.2 K 1728 cal

-451.8 ºF 331.6 ºC

#4 21 ºC #16 .023 cm

#5 962.1 ºC .013 cm

1763.8 ºF #18 6.21 x 10-5 m

#6 190,000 cal .3000621 m

795,000 J #19 .446 m

#7 800,000 cal #20 .003 m

3,347,000 J 436.7 ºC

#8 3413 cal #21 49 J

#9 346,500 cal 10.8 ºC

1,450,000 J #22 1.0 N

#10 25 ºC 15 J

35 ºC .055 ºC

#11 10.0 kg #23 40 J

#12 1950 cal 42.7 ºC

.03 cal/g ºC

Chapter 22 Homework

Problem Answer Problem Answer

#1 11.83 cal/s #2 5.3 m2

1.43 cal/s 123 cal/s

0 cal/s . . .

Chapter 23 Homework

Problem Answer Problem Answer

#1 2450 cal #6 23,900 cal

755 cal 1500 cal

755 cal . . . #7 780 cal

#2 2380 cal 5396 cal

5400 cal 6176 cal

#3 31,080 cal 10.2 ºC

31,080 cal . . . #8 476 cal

#4 3590 cal 540 cal

4500 cal #9 738,000 cal

24,300 cal #10 10,500 cal

#5 -2 ºC 239,100 cal

40 cal 75,000 cal

96 ºC 324,600 cal

265 cal

Chapter 24 Homework

Problem Answer Problem Answer

#3 373 K #5 45 %

273 K 32,600 J

27 % #6 36 %

#4 3.4 % 20,000 J

1.65 % 60,000 J