Question

How much energy is required to change a 55-g ice cube from ice at 0°C to...

How much energy is required to change a 55-g ice cube from ice at 0°C to steam at 140°C? J

Homework Answers

Answer #1

step;1

Given that

mass m=0.055 kg

step;2

now we find the energy required

the heat energy ice to water at )C

Q1=mL=0.055*3.34*10^5 =18370 J

the heat energy from water at 0C to 100 C

Q2=0.055*4200[100-0]=23100 J

the heat energy required from 100 C to steam at 100 C

Q3=0.055*2.26*10^5=12430 J

the heat energy required from 100 to 140 C

Q4=0.055*2058[140-100]=4527.6 J

the net amount of heat energy required

Qnet=Q1+Q2+Q3+Q4

=[4527.6+12430+23100+18370]

=56319.54 J

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