Three samples of crystalline materials are available: sample A, B, and C. All of them are melted exactly at 82 degrees Celsius. Combine a mixture of sample A and B and melt at 82-degree Celsius. Next, combine a mixture of sample A and sample C and melt at 64-degree Celsius. Finally. Combine a mixture of sample B and sample C and melt at 71-degree Celsius. What can you determine about the samples A, B, and c?
Three samples of crystalline materials are available: sample A, B, and C. All of them are...
1. The following chromatogram contained three samples before their development: sample A, sample B and sample C. After visualization of the plate with ultraviolet light, the plotting of the contours of the spots on the chromatogram is ndicated below. Write down all the conclusions that derived from this chromatographic analysis regarding the nature of fractions A, B and C. Determine each value of the retention fronts and use them as one of the main criteria for be 2. Consider the...
Refer to the following figure, stress-strain diagram, for samples of three different materials: A, B, and C. The end of each curve indicates the fracture point. e) After the conclusion of the tests, if the broken halves of each sample were fitted back together, which sample would be the shortest? Assume that all three samples had the same initial length. f) A circular rod is to be produced, 15 cm long with a diameter of 5.0 mm. This rod must...
Let A, B and C be three events defined on a sample space S (for the purposes of illustration assume they are not disjoint as shown on the Venn diagram below). Find expressions and draw the Venn diagram for the event, so that amongst A, B and C: a. only A occurs b. both A and B occur, but not C c. all three events occur d. none of the events occurs e. exactly one of the events occurs f....
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Ductility can be measured as % reduction in area from broken tensile samples D Ductility is deformation in the elastic region E Ductility is the change between upper and lower yield point in steels Q22. Which one of the following statements is TRUE about Charpy impact...
PROCEDURE A. ABSORBANCE SPECTRA 1. Obtain three cuvettes. Add-2mL of the following samples to them: red dye, blue dye, yellow dye. 2. Obtain a spectrum for each dye according to the provided directions (water is the blank). 3. For each of the three dyes (red, yellow, and blue) record the wavelength for the largest peak in the visible range (380 nm to 750 nm), Record this in the data table below. Save the red dye for part B. 4. Identify...
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in : % 2. A gas chromatograph can be used to (more than one answer may be correct) -determine the mass of a compound. -determine the percentage composition of a...
C++ requirements All values must be read in as type double and all calculations need to be done using type double. For part 2 you MUST have at least 4 functions, including main. The main function will be the driver of the program. It needs to either do the processing or delegate the work to other functions. Failure to follow the C++ requirements could reduce the points received from passing the tests. General overview This program will convert a set...
1. Consider three 1-g samples of matter: (a) oxygen-16, (b) oxygen-17, and (c) carbon-12. Rank them in terms of the number of atoms, from most to least. 2. Consider these atoms: (a) copper, Cu; (b) neon, Ne; (c) hydrogen, H. Rank them, from smallest to largest , in terms of size. 3. The isotope 12-carbon has a mass of 12.000amu, and the isotope 13-carbon has a mass of 13.003amu . Given that 98.93{\rm \\%} of all carbon atoms found in...
all questions are from last year exam paper.I need solution for all of them so that I can prepare for my exam.Please help (b) Let the random variable X with the probability density function f(x) = 2x; 0<x<1. Find: the p.d.f. of Y = 8X3 (i) (ii) E(Y) and Var(Y). Also show that E(Y) = E(8X3). 6 4. (a) The probability that a patient recovers from a delicate heart operation is 0-8. What is the probability that exactly 2 of...
Question 14 The melting point of a pure compound is known to be 110-111º. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity. 90-96 111-113 90-91 110-111 5 pts Question 15 You and your lab partner take melting points of the same sample. You observe a melting point of 101-107°C, while your partner observes a value of 110-112°C. Explain how you can get two different values with exactly the same sample. One of the...