Points Possible Ofton Marti at Huntington Univenity Grade Category Description:
ID: 778260 • Letter: P
Question
Points Possible Ofton Marti at Huntington Univenity Grade Category Description: How many joules of heat is needed to melt 100 g of ice that is at -20° C and warm it to 50° C? Policies You can check you You can view soluti give up on any ques You can keep trying you get it right or gi You lose 5% of the po answer in your questic 29302 J O Previous Give Up & View Solution # Try Again O Next Exit O eTextbook Soblem solving steps 1. Calculate the heat needed to warm the ice from -20°C to oPC. Help With This Topic C-2.08 Jig C for ice O Web Help & Videos 2 Calculate the heat needed to meit the ice. ALIENWAREExplanation / Answer
Heat needed to warm the ice from -20oC to 0oC
Q1=mC(T2-T1) =100*2.06*(0+20) =4120 J
Heat needed to melt the ice
Q2=mLf=0.1*(3.34*105) =33400 J
Heat needed to raise the temperature of water from 0oC to 500C
Q=100*(4.184)*(50-0) =20920 J
Total Heat required
Q=4120+33400+20920
Q=58440 Joules