Heat require to reach to temperature of ice at 0oc
Q=msΔT
=0.080×2093×(15)
=2511.6J
Heat require to melt the ice
Q1=mL
=0.080×333000J
=26640J
Hence, total energy require to melt the ice =Q+Q1
=26640+2511.6
=29151.6J
Thermal energy of 150g of water at 80∘
=0.150×4200×80J
=50400J
Hence we can say that ice will get melt completely.
⇒29151.6J=0.08×4200(t)+0.15×4200×(80−t)
⇒336t+50400−630t=29151.6J
⇒294t=21248.4J
⇒t=29421248.4∘
⇒t=72,27∘C
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