Using the Cu-Ni phase diagram (Callister, Chap.9, pp. 288) estimate the following quantities for a nominal composition of 55%Ni – 45% Cu:
a) Liquidus Temperature,
b) Solidus Temperature,
c) The composition of the liqiud and solid phases present in alloy at 1300°C,
d) Using the inverse lever rule, find the amount (by weight) of liquid and
solid phases present in alloy.
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1.00 oobt = 3.43 qvsts
1.00 qvst = 15.4 zzbts
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Calculate the thermodynamic favorability of aerobic Mn(II) oxidation and aerobic Fe(II) oxidation at pH 2 and 7. Is it likely that an organism could get “enough” energy to grow from each of these four processes?
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Consider the titration of 42.8 mLmL of 0.265 MM HFHF with 0.185 MM NaOHNaOH. Calculate the pHpH at each of the following points.
Part A
How many milliliters of base are required to reach the equivalence point?
Express your answer using three significant figures.
Part B
Calculate the pHpH after the addition of 10.7 mLmL of base
Express your answer using two decimal places.
Part C
Calculate the pHpH at halfway to the equivalence point.
Express your answer using two decimal places.
Part D
Calculate the pHpH at the equivalence point.
Express your answer using two decimal places.
Part E
Calculate the pHpH after the addition of 85.6 mLmL of base.
Express your answer using two decimal places.
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I would really appreciate it if you could explain this problem step by step, in as much detail as possible, as I am having a difficult time trying to understand it. Thank you :)
How many liters of CO2 can be produced by combustion of 5.80 g butane with 15.0 liters of oxygen . All gases measured at STP.
I appreciate your help!
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1. Distinguish between reverse phase and normal phase separations. 2. What is the dynamic range for absorbance spectroscopy? What is the dynamic range for fluorescence spectroscopy? Which has the lowest LOD and why? 3. What types of molecules fluoresce? What is quenching and what makes a good quencher? 4. What is the underlying equation for all partition chromatography methods? Why?
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Arrange the 0.15 M solutions of the following compounds in order of increasing acidity (least acidic first).
NH4I B. CH3COONH4 C. CH3COOK D. KCl E. CH3COOH
F. KF G. HBr H. CHCl2COOH I. NH3 J. CF3COOH
ammonia, Kb = 1.80
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What is the key difference in the biosynthesis of purine ribonucleotides vs. the biosynthesis of pyrimidine ribonucleotides?
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At a certain temperature, 0.4011 mol of N2 and 1.581 mol of H2 are placed in a 1.50L container. N2(g) + 3H2(g) −⇀↽− 2NH3(g) At equilibrium, 0.1401 mol of N2 is present. Calculate the equilibrium constant, Kc.
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Calculate the molar solubility of magnesium fluoride in each of
the following solutions:
a) pure water
b) 0.010 M potassium fluoride solution
c) 0.050 M solution of magnesium nitrate
d) Why are the results of parts (a) thru (c) different?
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A). A mixture of methane and argon gases is maintained in a 8.34 L flask at a pressure of 2.24 atm and a temperature of 66 °C. If the gas mixture contains 3.59 grams of methane, the number of grams of argon in the mixture is............ g
. B). A mixture of xenon and hydrogen gases, in a 5.89 L flask at 13 °C, contains 12.5 grams of xenon and 0.288 grams of hydrogen. The partial pressure of hydrogen in the flask is.............. atm and the total pressure in the flask is............. atm.
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what intermolecular forces are present in each of the substances?
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EXAMPLES OF THERMODYNAMIC STATE FUNCTION WITH DEFINITION
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A 1.000-L vessel contains a mixture of hydrogen, carbon monoxide and methane gases in unknown proportions at 23.3-bar and 25 °C. The gaseous mixture is found to have a mass of 13.70-g and a higher heating value of 494.90 kJ/mol. What is the composition of the gas?
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