How much heat, in kJ, is required to melt 0.35kg of a metal at its melting point? The specific latent heat of the metal is 726kJ/kg.?
physical science help
- Anonymous2 months ago
energy = mass * heat of fusion
Include your units and convert as needed.
- davidLv 72 months ago
Multiply ... 0.35 X 726 kJ = 254,1 kJ <<< round as needed
- 冷眼旁觀Lv 72 months ago
= m × Lf
= (0.35 kg) × (726 kJ/kg)
= 254 kJ
- Roger the MoleLv 72 months ago
Pay attention to the units and this problem works itself:
(726 kJ/kg) x (0.35 kg) = 254.1 kJ = 250 kJ