How much thermal energy is needed to change 80 g of water initially at 60°C to steam? [c = 4200 Jkg

JAMB Physics 2023 183 views
Source: JAMB · 2023

How much thermal energy is needed to change 80 g of water initially at 60°C to steam?

[c = 4200 Jkg⁻¹K⁻¹, l = 2.26 x 10⁶ Jkg⁻¹]

  1. 194 kJ ✓
  2. 246 kJ
  3. 126 kJ
  4. 224 kJ

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