Exactly 1 kg of H₂O, heated at 1 atm. Every number here is from NCERT: s(ice) = 2060, s(water) = 4186 J kg⁻¹ K⁻¹, Lf = 3.33×10⁵, Lv = 22.6×10⁵ J kg⁻¹.ठीक 1 kg H₂O, 1 atm पर गर्म किया गया। यहाँ हर संख्या NCERT से है: s(बर्फ़) = 2060, s(जल) = 4186 J kg⁻¹ K⁻¹, Lf = 3.33×10⁵, Lv = 22.6×10⁵ J kg⁻¹।