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1. Please reduce following data for Methyl Ethyl Ketone (1) and Toluene (2) at 50oC:
P /kPa
x1
y1
12,30( P2sat)
0.0000
15.51
0.0895
0.2716
18.61
0.1981
0.4565
21.63
0.3193
0.5934
24.1)1
0.4232
0.6815
25.92
15 119
0.7440
27.96
0,6096
0.8050
30.12
0.7135
0.8639
31.75
0.7934
0.904A
34.15
0.911)2
0.9590
36.09(P1sat)
1.00(x)
1.0000
By plotting ln(γ1) and In(γ2) and GE/(x1x2RT) against xl Discuss significance of activity coefficients at infinite dilutions and evaluate values of A12 and A21 in:
GE / x1x2RT = A21x1 + A12x2
2. A researcher mixed two liquids A and B in equal volumetric amount (100 ml each) with the objective to form 200 ml of a solution. However, it was later found that the net volume was somewhat less than expected. Calculate this net decrease in the volume. Also this researcher then decided to simply add more volume of liquid B until the total volume became exactly 200 ml - how much liquid B the researcher had to add'?
Use VA = 40.727 cm3 mol and VB = 18.068 cm3 mol-1 with corresponding partial molar volumes as 38.632 cm3 mo1-1 and 17.765 cm3 mol-1 respectively. Remember net volume of a solution is algebraic sum of partial molar volumes. Also do not forget that liquid arc "not" ideal gases - their volumes fractions and mole fractions arc different. Molecular weight of A and B are 40.727 and 180.068 respectively.
In terms of measures of association, how is Lambda different from the other measures used for nominal level data?
Also explain which of the three measures of central tendency would be appropriate for your example, which would be inappropriate, and why.
This set of height measurements are recorded in centimeters. Answer the following questions using the Histogram Applet. Is 1.7cm a Plausible mean value? Explain.
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The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound. What percentage of samples of 4 fish will have sample means between 3..
A medical researcher found a significant relationship among a person's age x1, cholesterol level x2, sodium level of the blood x3, and systolic blood pressure y.
Give an example of how you may use multiple regression to answer a question related to the impact of leadership change on employee attitudes scores, teambuilding training and performance outcomes.
The percentage rates of home ownership for 8 randomly selected states are listed below. Estimate the population variance and standard deviation for the percentage rate of home ownership with 99% confidence level.
What is the logic behind using the sum of the products of deviation scores as the numerator of the formula for the correlation coefficient? Is this logic sound?
A federal bank examiner is interest in estimating the mean outstanding defaulted loans balance of all defaulted loans over the last three years. Calculate a 90% confidence interval for the mean balance of defaulted loans over the past three years.
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