HW 8-Sol - a) From the solubility limit curve in Figure, at...

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a) From the solubility limit curve in Figure, at 80°C the maximum concentration of sugar in the syrup is about 74 wt%. It is now possible to calculate the mass of sugar % 74 100 1000 100 wt m m m m m C sugar sugar water sugar sugar sugar = × + = × + = , g m sugar 2846 = b) At 20°C the solubility limit (or the concentration of the saturated solution) is about 64 wt% sugar. Solid phase of composition: 92%wtAg-8wt.%Cu 88%atAg-12at.%Cu Liquid phase of composition: 92%wtAg-8wt.%Cu 66%atAg-34at.%Cu According to the phase diagram, the temperature is about 800 C. solid C liquid C
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1255 C 47 wt%Ni 1230C 33wt%Ni 100% solid 24.5wt.Ni and T=1250C 46wt.%Ni 42.5wt.%Ni
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a. An equilibrium state i. A mixture of reacting gas molecules constrained to a fixed temperature. For example, H 2 , O 2 and H 2 O at 600K, will achieve its equilibrium composition after a relatively short time. ii. Ice floating in water, thermally insulated from its surroundings, eventually reaches a stable ratio of volumes of the two phases iii. A foil birthday balloon brought into a hot room will first expand to its fullest, then, at fixed volume, increase its internal pressure until it reaches an equilibrium value. b. A steady state i. Molten steel poured into a continuous casting mill quickly achieves a time invariant pattern of temperatures and liquid and solid phase distribution that persists as long as molten metal is poured in at the top and solid steel is withdrawn from the bottom. ii. A hose supplies water to a bucket with a hole in it. The flow rate from the hose is adjusted until the
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This note was uploaded on 12/10/2010 for the course MSEN 601 taught by Professor Zhang during the Spring '08 term at Texas A&M.

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HW 8-Sol - a) From the solubility limit curve in Figure, at...

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