Composition (at% Zn) 100 2200 20 40 60 80 1200 2000 atL Liquid 1000 1800 B+L H1600 800 1400뜨 8+L -1200 600 1000 800 400 te 600 %3D 200 400 100 20 40 60 80 (Cu) Composition (wt% Zn) (Zn) Temperature ('C) Temperature (*F)
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Calculate the invariant reactions for Cu-Zn
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Reaction (eutectic eutectoid peritectic peritectoide) |
Temperature | Transformation |
Step by step
Solved in 2 steps with 3 images
- 7 Advanced Thermodynamics With compulsory diagrams or graphs. 1)a) What are the methods to destroy state of superconductivity? Discuss in details with diagrams. 1)b) Discuss with year wise progress made in superconductivity research and application till date.In an electrochemical cell, a metal anode lost 0.227 g while a total volume of 0.08149 L of hydrogen gas was produced. The temperature was 298 K and the barometric pressure was 745.4 mm Hg. At 298 K, the vapor pressure of water is 23.8 mm Hg. How many moles of hydrogen gas were collected?1. Energy consumption in a country from 2001 to 2011 increased from 1041.3 million to 1526.1 million BOE (barrels of oil equivalent). If the high calorific value (HHV) of the oil is 141,000 kJ/gallon what is the increase in energy consumption over 10 years in Joule units. What is the rate of energy consumption per year? 2. Based on data on the rate of energy consumption per year from question no. 1, if the growth rate energy 2.5% per year, calculate the doubling time (td) and what is the approximate rate of energy growth in 2021.
- A forensic chemist is given a white solid that is suspected of being pure cocaine (C17H21NO4 , molar mass = 303.35 g/mol). She dissolves 1.22 ± 0.01 g of the solid in 15.60 ± 0.01 g benzene. The freezing point is lowered by 1.32 ± 0.04°C.a. What is the molar mass of the substance? Assuming that the percent uncertainty in the calculated molar mass is the same as the percent uncertainty in the temperature change, calculate the uncertainty in the molar mass.b. Could the chemist unequivocally state that the substance is cocaine? For example, is the uncertainty small enough to distinguish cocaine from codeine (C18H21NO3, molar mass = 299.36 g/mol)?c. Assuming that the absolute uncertainties in the measurements of temperature and mass remain unchanged, how could the chemist improve the precision of her results?A core was mounted in a gas permeameter to measure permeability. Determine the liquid permeability (mD) of the core using gas (in oilfield units). The laboratory data are as follows: Diameter of the core = 3.78 cm Length of the core = 7.63 cm Gas viscosity = 0.0148 cP Flow rate = 9.07 cm3/s P1 = 1.439 atm P2 = 1.086 atmWhich of the following is FALSE regarding the continuum assumption of fluids? Select one: a. Uncertainties within the molecular properties of the fluid will be neglected b. Limit concepts can be applied on fluids c. Fluids with same composition may have different properties d. The fluid will be analyzed in the macroscopic level Which of the following does NOT describe a difference between liquids and gases? Select one: a. Liquids form a free surface while gases do not b. Liquids have lower bulk modulus of elasticity than gases c. Specific gravities of liquids are higher than gases d. Viscosity of liquids decreases as temperature increases while on gases, viscosity increases with temperature
- 5.2 Evaluate the Prandtl number from the following data: , .You can use 19.6 x 10^-6 as the experimental result Brass is an alloy that can consist of copper and zinc, where zinc has a coefficient of linear expansion that is between23.0to32.5in units of10−6(∘C)−1. Use the experimental results from the second procedure to determine the range of percent of coppper and the range of percent of zinc in the unknown rod. (Please type answer no write by hend)You are given a sample of polypropylene and wish to find out the volume % crystallinity. You know that the density of 100% crystalline polypropylene (ρc) is 0.946 g/cm3, and the density of 100% amorphous polypropylene (ρa) is 0.855 g/cm3. Through your careful measurements, you determine the density of the sample (ρs) is 0.93 g/cm3. Use the following equation to determine the volume % crystallinity (ν) of your sample. Enter your answer with 1 decimal place. Answer is 82.4 Another sample of polypropylene has a 68 volume percent crystallinity. What is the density of the sample? Enter your answer is g/cm3. ( I need help with this second question. The answer is .917, i just can't get to that.) Hint: use the values and equation from the previous problem.
- You are given a sample of polypropylene and wish to find out the volume % crystallinity. You know that the density of 100% crystalline polypropylene (ρc) is 0.946 g/cm3, and the density of 100% amorphous polypropylene (ρa) is 0.855 g/cm3. Through your careful measurements, you determine the density of the sample (ρs) is 0.93 g/cm3. Use the following equation to determine the volume % crystallinity (ν) of your sample. Enter your answer with 1 decimal place. Another sample of polypropylene has a 68 volume percent crystallinity. What is the density of the sample? Enter your answer is g/cm3. I can answer the first part of the question. I just don't know how to do the second question?a) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 5.00-g peanut if the energy from burning it is transferred to 0.500 kg of water held in a 0.100-kg aluminum cup, causing a 54.9C temperature increase? (b) Compare your answer to labeling information found on a package of peanuts and comment on whether the values are consistent.I mix two fluids together, and I use the same mass of each fluid. They are completely miscible; in fact, the two chemicals are isomers. What is the composition of the mixture on a molar basis? Give a numerical answer and a written explanation of how you arrived at it, but do not use any equations.