How many triple points are there on the graph
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How many triple points are there on the graph

Transcribed Image Text:k the following liquids in order of increasing boiling points, from lowest to
nest:
NH3 / Ar / N2. Explain.
ow is the phase diagram of sulphur. At 95.4'C, the densities of rhombic and
1oclinic sulphur are 2.07 g cm³ and 1.96 g cm³, whilst the enthalpy change for th
se transition from rhombic to monoclinic sulphur is 0.3 kJ mol".
Sulfur
153°C,
1420 atm
Liquid
95.4°C
115.21°C
1 atm
Monoclinic
444.6°C
115.2°C,
3.2 x 10-5 atm
Rhombic
95.3°C,
5.1 x 10-6 atm
Gas
T
ow many triple points are there?
Vhat is the most stable form of sulphur under normal conditions?
Describe what happens when sulphur at 1 atm is heated from 80°C to 200°C.
Determine the volume change AV for the transformation from rhombic to
noclinic sulphur.
Estimate the pressure at which rhombic and monoclinic sulphur coexist in
ilibrium at a temperature of 373 K.
slope of the solid-liquid coexistence curve in the water phase diagram is -135
/K. At 1 atm, an 80 kg ice skater manages 2 cm? contact area with the ice (really
-p skates). What pressure is exerted on the ice by the skater?
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