Jika 2 kg es dipanaskan daru suhu -5 C hingga 50 C,hitunglah besarnya kalor untuk merubah wujud . Kalor lebur = 80 kal/gr , Kalor jenis es = 0,5 kal/gr C , kalor jenis air = 1 kal/gr C
merlinnariyaayu
Diket: m = 2kg t1 = -5 t2 = 50 Δt = 50-(-5)=55 c lebur= 80 kal/gr c c es =0,5 kal/gr c c air =1 kal/gr c dita: Q.....? jawab
Q1 = m.c.Δt = 2.o,5.55 =55 kal/gr c Q2 =m.c lebur =2.80 =160 kal/gr c Q total = Q1+Q2 =55+160 =215 kal/gr c
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DenmazEvan
Jawaban yaitu 735 Kj Perhitungan dapat dilihat pada lampiran
t1 = -5
t2 = 50
Δt = 50-(-5)=55
c lebur= 80 kal/gr c
c es =0,5 kal/gr c
c air =1 kal/gr c
dita: Q.....?
jawab
Q1 = m.c.Δt
= 2.o,5.55
=55 kal/gr c
Q2 =m.c lebur
=2.80
=160 kal/gr c
Q total = Q1+Q2
=55+160
=215 kal/gr c