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Construct the hypothetical binary system S-T which represents the following conditions (label all areas):
a. component S melts at 1800 centigrate.
b. component T melt at 1550 centigrate.
c. compound S2T3 melts congruently at 1450 centigrate.
d. compound S2T melts incongruently at 1400 centigrate.
e. a maximum of 25 % of T is soluble in S2T3 forming the solid solution phase alfa.
f. A eutectic exists between alfa(ss) and T at 1300 centigrate.
g. beta-S2T transforms to alfa-S2T when heated above 1150 centigrate.
h. a eutectic exists between alfa-S2T and S2T3 at 1300 centigrate.
cubic centimeter of rubber is worn off an automobile tire with each revolution of the wheel?
An alloy is made of Copper (Cu) and tin (Sn). The density of the alloy is found to be 8.76g/cm3. The reported densities of copper and tin are as follows: Cu = 8.96g/cm3 Sn = 7.30g/cm3. Find the % of copper and zinc in the alloy.
A sample of nitrogen gas in a 4.9 L container at a temperature of 51 C exerts a pressure of 5.1 atm. calculate the number of moles of gas in the sample
the pka of benzoic acid and 4-nitroanilinium hydrochloride are 4.2 and 1.0 respectively.a. determine the keq for the
Which of the following aqueous solutions produces the largest concentration of toal ions and what is the total concentration of ions. A) 1.5 m sodium sulfate B) 1.5 m magnesium sulfate C) 2.0 m lithium perchlorate D) 1.0 m magnesium phosphate
calculate the number of microstates, W, that have this energy. Make sketches of these microstates. Calculate the corresponding entropy for each state.
titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs.
Given the following vapor pressures at 20 degrees Celsius, arrange the compounds in order of increasing boiling point: butane, 1,650 mm Hg; acetaldehyde, 740 mm Hg; Freon-113, 284 mm Hg.
The dimensions of a rectangular solid are 8.45 cm long, 4.33 cm wide and 2.85 cm high. If the density of the solid is 9.43 g/cm3, then determine the mass?
The volume of container 2 is 0.347 L and has a pressure of 0.315 atm. The volume of container 1 is 1.145 L. What is the pressure of the unknown gas in container 1? The temperature of both containers is 261 K.
when a substance is being reduced, what type of current is produced?
22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure
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