Question

Calculate the number of joules of heat energy required to raise the temperature of 125 gram of silver from 100.0 degree celsius to 250.0 degree celsius.​

Answer 1

• Mass=m=125g

• Heat capacity if silver =c=0.233J/kg°C
• Initial temperature=100°C
• Final Temperature=250°C

First we need to find change in temperature.

`\boxed{\sf \Delta T=T_f-T_I}`

`\\ \sf{:}\implies \Delta T=250-100`

`\\ \sf{:}\implies \Delta T=150°C`

Now

• Heat =Q(As we are using thermodynamics)

`\boxed{\sf Q=mc\Delta T}`

`\\ \sf{:}\implies Q=125(0.233)(150)`

`\\ \bf{:}\!\implies Q=4368.75J`