Calculate the change in internal energy of a block of copper of mass 200 g when it is heated from 25°C to 75°C.

Calculate the change in internal energy of a block of copper of mass 200 g when it is heated from 25°C to 75°C.

Calculate the change in internal energy of a block of copper of mass 200 g when it is heated from 25°C to 75°C. Take specific heat of copper = 0.1 cal g-1 °C-1 and assume the change in volume as negligible.

Answer:
m = 200gm
dU = ?
dT = 50°C
dV = 0
c = 0.1 cal g-1 °C-1
dQ = cmdT = 0.1 x 200 x 50 = 1000 cals
dW = PdV = 0
dU = dQ − dW = 1000 − 0 = 1000 cal.
1000 x 4.2J = 4200J

X

Hi, Welcome to Maxbrain Chemistry.
Join Telegram Channel to get latest updates.
Join Now

Daily
Quiz

Admission Alert ⚠️

✦ B.Sc. All Semester


✦ CBSE:12th Complete Course Annual Exam 2026


✦ CBSE:12th Compartmental Exam July 2025


✦ NIOS:Sr. Secondary Complete Course October 2025


Complete Syllabus | PYQs | MCQs | Assignment


Online Class: 1st June 2025


Call or WhatsApp