Thursday
March 23, 2017

Post a New Question

Posted by on Tuesday, October 12, 2010 at 10:56pm.

Lead is a soft, dense metal with a specific heat of 0.028 kcal/kg·C°, a melting point of 328.0°C, and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 202.2 kg sample of lead with a temperature of 20.0°C?

  • physical science - , Tuesday, October 12, 2010 at 11:23pm

    q1 = heat to raise temperature from 20 C to 328.
    q1 = mass Pb x specific heat Pb x (328-20).

    q2 = heat to melt Pb at 328.
    q2 = mass Pb x delta H fusion.

    Total heat = q1 + q2.

  • physical science - , Friday, October 4, 2013 at 10:31am

    3531kcal

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question