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· The average mass of nitrogen from air...
A random sample of 49 measurements from one population had a sample mean of 13, with...
A random sample of 49 measurements from one population had a sample mean of 13, with sample standard deviation 3. An independent random sample of 64 measurements from a second population had a sample mean of 15, with sample standard deviation 4. Test the claim that the population means are different. Use the level of significance 0.01. Using s1 = 3 and s2 = 4, we can compute the t value corresponding to the test statistic x1 − x2 = −2. Recall...
9. The density of air at 1.000 atm and 25 °C is 1.186 g/L. a) b) Calculate the average molecular mass of air. From...
9. The density of air at 1.000 atm and 25 °C is 1.186 g/L. a) b) Calculate the average molecular mass of air. From this value, and assuming that air contains only molecular nitrogen and molecular oxygen gases, calculate the mass % of N2 and O2 in air.
The density of air at 1.000 atm and 25 °C is 1.186 g/L. 9. Calculate the average molecular mass of air. a) From thi...
The density of air at 1.000 atm and 25 °C is 1.186 g/L. 9. Calculate the average molecular mass of air. a) From this value, and assuming that air contains only molecular nitrogen and b) molecular oxygen gases, cal culate the mass % of N2 and O2 in air.
9. We want to prove that the average percentage of nitrogen in the air during the...
9. We want to prove that the average percentage of nitrogen in the air during the Cretaceous era was different than the current 65.1%. The percentage of nitrogen in the air during the Cretaceous era is approximately normally distributed. A random sample of nitrogen percentages from the Cretaceous era is taken (obtained from amber samples) and the data are: 63.4, 65.0, 64.4, 63.3, 54.8, 64.5, 60.8, 49.1, 51.0. Use a = 0.01. a) (7 pts.) Calculate the sample mean and...
I understand how to do it, but am not sure how to get the angle (from...
I understand how to do it, but am not sure how to get the angle
(from the positive x axis) that the normal forces and friction
forces are for the FBD.
The car has a mass of 1.6 Mg and center of mass at G. If the coefficient of static friction between the shoulder of the road and the tires is丛= 0.42, determine the greatest slope θ the shoulder can have without causing the car to slip or tip over...
I’m confused on how to find g Hang 5 different masses (make sure to use kg)...
I’m confused on how to find g
Hang 5 different masses (make sure to use kg) from the spring so that they do not oscillate (static equilibrium) and measure the amount of deflection from equilibrium (x) for each mass as shown in the figure below. Record your values in the table below. Do not overstretch the springs!!! Use Hooke's Law to determine the acceleration of g for each of the suspended masses (if there is a lot of variety in...
I need help with the UCL R. I am not sure what I am doing wrong....
I need help with the UCL R. I
am not sure what I am doing wrong. Thank you!
A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n- 5) taken. The population process standard deviation is 1.64 Samples 2 3 456 7 8 910 910 13 10 11 9 10 1289 9 9 9 10 9 10 16 71 9 10 10 10 8 9 7...
Hello, I am having trouble solving this air pollution problem. Please give me a help. Thank you
Hello, I am having trouble solving this air pollution problem.
Please give me a help. Thank you
An industrial plant emits process gas with a flow rate of 300 m3 min1 at 82 C and 1 atm (760 mmHg 1.01325x105 Pa) containing 500 ppm (v/v) SO2. If the gas is to be cleaned by a packed bed scrubber using sodium hydroxide (NaOH) solution containing 20% NaOH by mass, determine the NaOH flow rate if we need a 60% S02 removal?...
9,10,11,12. Not sure I am doing this right. Looking for some assistance. Thank you so much....
9,10,11,12. Not sure I am
doing this right. Looking for some assistance. Thank you so much.
playing catch up due to all the changes.
Tria Aspirin Brand (and amount of acetylsalicylic acid on label) Bayer 2) Average molar concentration of NaOH Solution B (from Part A) Trial 1* T Trial 2 T 3) Mass of aspirin tablet To. 4039 0.4049 4) Mass of pulverized aspirin sample 10. 370g 0,400 5) Initial buret reading 6.03ML 0.56m2 6) Final buret reading 116.88mL...
hello the answer is c but i am not sure how to get to this answer...
hello the answer is c but i am not sure how to get to this
answer
Vmax 15i/akm+si kw ESE ESTET (23. A reaction was analyzed with only 2 points. Assuming linearity, estimate the Vmax and Km from these measurements. Hint: Slope = rise/run merose (42-4D vuM/s) [S] (um) re r un (x2-x) , 40 100 yot a. Vmax = 80 M/s, km = 100 M 20 t b. Vmax = 120 uM/s, km = 200 M C. Nmax =...
9. The density of air at 1.000 atm and 25 °C is 1.186 g/L. a) b) Calculate the average molecular mass of air. From this value, and assuming that air contains only molecular nitrogen and molecular oxygen gases, calculate the mass % of N2 and O2 in air.
The density of air at 1.000 atm and 25 °C is 1.186 g/L. 9. Calculate the average molecular mass of air. a) From this value, and assuming that air contains only molecular nitrogen and b) molecular oxygen gases, cal culate the mass % of N2 and O2 in air.
9. We want to prove that the average percentage of nitrogen in the air during the Cretaceous era was different than the current 65.1%. The percentage of nitrogen in the air during the Cretaceous era is approximately normally distributed. A random sample of nitrogen percentages from the Cretaceous era is taken (obtained from amber samples) and the data are: 63.4, 65.0, 64.4, 63.3, 54.8, 64.5, 60.8, 49.1, 51.0. Use a = 0.01. a) (7 pts.) Calculate the sample mean and...
I understand how to do it, but am not sure how to get the angle
(from the positive x axis) that the normal forces and friction
forces are for the FBD.
The car has a mass of 1.6 Mg and center of mass at G. If the coefficient of static friction between the shoulder of the road and the tires is丛= 0.42, determine the greatest slope θ the shoulder can have without causing the car to slip or tip over...
I’m confused on how to find g
Hang 5 different masses (make sure to use kg) from the spring so that they do not oscillate (static equilibrium) and measure the amount of deflection from equilibrium (x) for each mass as shown in the figure below. Record your values in the table below. Do not overstretch the springs!!! Use Hooke's Law to determine the acceleration of g for each of the suspended masses (if there is a lot of variety in...
I need help with the UCL R. I
am not sure what I am doing wrong. Thank you!
A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n- 5) taken. The population process standard deviation is 1.64 Samples 2 3 456 7 8 910 910 13 10 11 9 10 1289 9 9 9 10 9 10 16 71 9 10 10 10 8 9 7...
Hello, I am having trouble solving this air pollution problem.
Please give me a help. Thank you
An industrial plant emits process gas with a flow rate of 300 m3 min1 at 82 C and 1 atm (760 mmHg 1.01325x105 Pa) containing 500 ppm (v/v) SO2. If the gas is to be cleaned by a packed bed scrubber using sodium hydroxide (NaOH) solution containing 20% NaOH by mass, determine the NaOH flow rate if we need a 60% S02 removal?...
9,10,11,12. Not sure I am
doing this right. Looking for some assistance. Thank you so much.
playing catch up due to all the changes.
Tria Aspirin Brand (and amount of acetylsalicylic acid on label) Bayer 2) Average molar concentration of NaOH Solution B (from Part A) Trial 1* T Trial 2 T 3) Mass of aspirin tablet To. 4039 0.4049 4) Mass of pulverized aspirin sample 10. 370g 0,400 5) Initial buret reading 6.03ML 0.56m2 6) Final buret reading 116.88mL...
hello the answer is c but i am not sure how to get to this
answer
Vmax 15i/akm+si kw ESE ESTET (23. A reaction was analyzed with only 2 points. Assuming linearity, estimate the Vmax and Km from these measurements. Hint: Slope = rise/run merose (42-4D vuM/s) [S] (um) re r un (x2-x) , 40 100 yot a. Vmax = 80 M/s, km = 100 M 20 t b. Vmax = 120 uM/s, km = 200 M C. Nmax =...
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