pure nickel melts at 1726K at 105 Pa (1 atm.) pressure, ΔV (solid-liquid) = 0.26 × 10-6 m3 . mol-1 and the heat of fusion, ΔHf = 18000 J.mol-1. The melting point of pure nickel, when acted upon by a pressure of 108 Pa is . . . . . . . . K.

pure nickel melts at 1726K at 105 Pa (1 atm.) pressure, ΔV (solid-liquid) = 0.26 × 10-6 m3 . mol-1 and the heat of fusion, ΔHf = 18000 J.mol-1. The melting point of pure nickel, when acted upon by a pressure of 108 Pa is . . . . . . . . K. Correct Answer 1723.5

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How far is point 'R' from Point 'T'? Statement (I): Point 'R' is 5 metres to the north of point 'M'. Point 'U' is 4 metres to the east of point 'R'. Point 'T' is to the west of point 'R' such that points 'U' 'R' and 'T' form a straight line of  metres. Statement (II): Point 'Z' is metres to the south of point 'T'. Point 'U' is  metres to the east of point 'T'. Point 'M' is  metres to the east of point 'Z'. Point 'R' is  metres to the north of point 'M'. Point 'R' lies on the line formed by joining points 'T' and 'U'.
ΔHr = Σ ΔHf – Σ ΔHf.