Respostas

2014-07-11T16:11:47-03:00
21) 2*25/320 = 2*62,5/T2
50/320 = 125/T2
50T2 = 320*125
T2 = 40000/50
T2 = 800K
Transformando K em ℃:
800 - 273 = 527 

22) 10*2/298 = 6*10/T2
20/298 = 60/T2
20T2 = 60*298
T2 = 60*298/20
T2 = 894K
894 - 273 = 621


23) 2,3/300 =  2,53/T2
2,3T2 = 300*2,53
T2 = 300*2,53/2,3
T2 = 330
330 - 273 = 57


24) 20*600/300 =  800*V2/320
40 = 800V2/320
V2 = 320*40/800
V2 = 16L