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7.Determine the composition of a methanol-ethanol mixture over which the equilibrium vapour pressure is 5.0 kPa. Assume that the mixture is ideal.
(Vapour pressure of pure methanol is 8.9 kPa; vapour pressure of pure ethanol is 4.0 kPa)
Report your answer in terms of mole fraction of methanol as a decimal to 3 significant figures. Do NOT include any words, symbols, units or spaces in your answer.
8.Use the information provided in question 7 to answer the question below.
Which statement is true about the composition of the vapour above an equimolar mixture of methanol and ethanol?
a.the vapour component that is in larger proportion depends on temperature
b.the vapour contains more ethanol than methanol
c.the vapour contains more methanol than ethanol
d.the vapour has equal amounts of methanol and ethanol
Determine the composition of a methanol-ethanol mixture over which the equilibrium vapour pressure is 5.0 kPa. Assume that the mixture is ideal.
(Vapour pressure of pure methanol is 8.9 kPa; vapour pressure of pure ethanol is 4.0 kPa)
Report your answer in terms of mole fraction of methanol as a decimal to 3 significant figures. Do NOT include any words, symbols, units or spaces in your answer.
Determine the composition of a methanol-ethanol mixture over which the equilibrium vapour pressure is 5.0 kPa. Assume that the mixture is ideal.
(Vapour pressure of pure methanol is 8.9 kPa; vapour pressure of pure ethanol is 4.0 kPa)
Report your answer in terms of mole fraction of methanol as a decimal to 3 significant figures. Do NOT include any words, symbols, units or spaces in your answer.
Rio's company is manufacturing steel wire with an average tensile strength of 50 kilos. The Laboratory test 16 pieces showed that the mean was 45kls with standard deviation of 5 kilos , is it correct to the company to claim that the tensile strength of steel wire is 50 kilos? Test the hypothesis at 0.01 level of significance.
• Basic Looping Task:
Based on the user's integer input (0-9).
Display sets of "*"
Example:
Enter a number: 6
******
Problem 3
A teacher wants to test his assumption that less than 30% of the Senior High School students like research class. After randomly collecting 150 samples, he found out that only 50 students like their research class.
Hypothesized proportion (p̂), th value of q, and finally the value of z.
*
p̂ = 0.27, q = 0.9, z = 2.05
p̂ = 0.27, q = 0.8, z = 2.14
p̂ = 0.27, q = 0.8, z = 2.0412
p̂ = 0.33, q = 0.7, z = 0.8
Problem 2
The Senior High School researchers claim that 20% of Senior High School male students have tried smoking cigarette. After collecting 150 random samples, they found 40 of them have tried smoking cigarette.
Hypothesized proportion (p̂), th value of q, and finally the value of z.
*
p̂ = 0.27, q = 0.9, z = 2.05
p̂ = 0.27, q = 0.8, z = 2.14
p̂ = 0.27, q = 0.8, z = 2.0412
p̂ = 0.33, q = 0.7, z = 0.8
Problem 1
A student researcher claims that 8% of the Junior High School completers will enroll in private Senior High Schools. To test this claim, he collected sufficient samples randomly and found out that 85 out of 380 Junior High School completers are planning to enroll in private Senior High Schools.
Hypothesized proportion (p̂), th value of q, and finally the value of z.
*
p̂ = 0.43, q = 0.98, z = 20.45
p̂ = 0.22, q = 0.42, z = 10.45
p̂ = 0.60, q = 0.92, z = 11.45
p̂ = 0.22, q = 0.92, z = 10.05
p̂ = 0.22, q = 0.92, z = 10.324
A one sample +-test is conducted
on Ho: M = 81.6. The sample has a
mean of 84.1, s = 3.1, n = 25, and a =
01. What conclusion can be drawn?
Write python code to read and write data to a file named "university.txt" with the following criteria:
- Change the "university hymn" in "university.txt" file to your favorite song
- Write "Submitted by: Firstname Lastname
#340153 on Dec 2023