the answers are a and d but I
don't understand the reasoning behind the first one or the math
behind the second one
Homework Answers
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the answers are a and d but I
don't understand the reasoning behind the first one...
Help as soon as possible 47 What is the conce to air which protects the bulk...
Help as soon as possible
47 What is the conce to air which protects the bulk metal from Aluminum forms a layer of aluminum oxide when exposed further corrosion , calculate AS° for this reaction. Using the thermodynamic data provided below S°/K-mol) 28.3 205.0 z0g) 20(s) 50.99 a. 182.3 J/K mol b. 131.5 J/K mol c -182.3 J/K mol d. -626.2 J/K.mol e -802.9 J/K-mol at is Kyp for this compound? e. 2.1 x 106 41. The molar solubility of...
18) The primary buffer system that controls the pH of the blood is the buffer system....
18) The primary buffer system that controls the pH of the blood is the buffer system. a) carbon dioxide, carbonate b) carbonic acid, bicarbonate e) carbonate, bicarbonate @ carbonic acid, carbon dioxide e) carbonate, carbonic acid 19) A solution containing which of the following substances will be a buffer solution? a)-RbCl, HCH (6) CsF, HF c)- Nal, HI d) KBr, Br e) KNO, HNO, 20) Calculate the pH of a solution prepared by dissolving 1.50 mol of benzoic acid (HA)...
Use first question to answer other 2. I need help understanding how to get to the answers. 1) Light from two lasers is i...
Use first question to answer other 2. I need help understanding how to get to the answers. 1) Light from two lasers is incident on an opaque barrier with a single slit of width 3.0 x 10-4 m. One laser emits light of wavelength 440 nm and the other is 660 nm. A screen to view the light intensity pattern is 2.0 m behind the barrier. What is the distance from the center of the pattern to the nearest completely...
Please show how you got your answer so I can understand what you did:) thanks! Calculate...
Please show how you got your answer so I can understand what you
did:) thanks!
Calculate the molar solubility of calcium carbonate in pure water at 25 oC. Kp 4.96 x 10 a. 7.04 x 10-5 M b. 5.54 x 10-6 M c. 1.33 x 10-5 M d. 8.43 x 10-3 M e. 1.03 x 10-5 M
5. Which of the following would decrease the K for PbCl2? 2. Lower the pH of...
5. Which of the following would decrease the K for PbCl2? 2. Lower the pH of the solution b. Add a solution of Pb(NO3)2 c. Add a solution of KCI d. Both band e. None of the above the Ky of a compound is constant at constant tempera mperature, 6. In which of the following aqueous solutions would you expect AgBr to have the HIGHES solubility? a. 0.10 M LIBE b. 0.10 M AgNO3 c. 0.20 M NaBr d. 0.15...
please explain the answers for these (such as why a decrease in pH would have no...
please explain the answers for these (such as why a
decrease in pH would have no affect in some of the molecules in
picture #2)
iewusg.edu/d2/le/content/1845236/viewContent/27964232/View To improve the quality of X-ray photos used in the diagnosis of intestinal disorders the patient drinks an aqueous suspension of BaSOg before having the X-ray. However, BaSO4 is slightly soluble (Ksp 1.1 x 10-10) and Ba2 is toxic. Which of the following compounds would be the best to add to the suspension in...
1. In which solution will aluminum hydroxide, Al(OH)3, be least soluble? The solutions are similar except...
1. In which solution will aluminum hydroxide, Al(OH)3, be least soluble? The solutions are similar except that they have the following pH values: Hint: Common ion effect. Which two ions dictate acidity and basicity? a. 3 b. 7 c. 9 d. 11 2. Potassium perchlorate has a solubility product constant of 10-2. Which is true about the following solution of KClO4: [K+] = 0.01 M, [ClO4 −] = 0.01 M a. Ksp < Q and no precipitation occurs b....
I need help I got the wrong answers and don't understand why. A polystyrene rod consisting...
I need help I got the wrong
answers and don't understand why.
A polystyrene rod consisting of two cylindrical portions AB and BC is restrained at both ends and supports two 10-kip loads as shown. Take E= 0.45 x 106 psi. - 1.25 in 25 i - 2 in References eBook & Resources Section Break Difficulty: Medium Problem 09.032 - Statically indeterminate structures (constant temperature), composite rods with both ends restrained (D) value: 10.00 points Problem 09.032.a - Reaction at...
This is a practice quiz and I want to make sure I have the correct answers,...
This is a practice quiz and I want to make sure I have the
correct answers, please help! thank you!
In
the text I said it was a practice quiz
1. Liquid aluminum will crystalize with a face-centered cubic (fce) unit cell. Face-centered cubic unit cells contain 8 atoms per unit cell. Determine the density of solid aluminum if the radius of an aluminum atom is measured to be 143 pm. (Hint: Calculate the mass and volume to determine the...
I have the answers for this question, however I don't understand part C - in particular...
I have the answers for this question, however I don't understand
part C - in particular why it seems to be double f(x) and the
variable change to u?
Question 3. Unit Conversion [16 marks] The temperature X in degrees Fahrenheit (F) of a particular chemical reaction is known to be distributed between 220 and 280 degrees with a probability density function of fx(x) = (x – 190)/3600. A value of X degrees Fahrenheit can be converted to Y degrees...
Help as soon as possible
47 What is the conce to air which protects the bulk metal from Aluminum forms a layer of aluminum oxide when exposed further corrosion , calculate AS° for this reaction. Using the thermodynamic data provided below S°/K-mol) 28.3 205.0 z0g) 20(s) 50.99 a. 182.3 J/K mol b. 131.5 J/K mol c -182.3 J/K mol d. -626.2 J/K.mol e -802.9 J/K-mol at is Kyp for this compound? e. 2.1 x 106 41. The molar solubility of...
18) The primary buffer system that controls the pH of the blood is the buffer system. a) carbon dioxide, carbonate b) carbonic acid, bicarbonate e) carbonate, bicarbonate @ carbonic acid, carbon dioxide e) carbonate, carbonic acid 19) A solution containing which of the following substances will be a buffer solution? a)-RbCl, HCH (6) CsF, HF c)- Nal, HI d) KBr, Br e) KNO, HNO, 20) Calculate the pH of a solution prepared by dissolving 1.50 mol of benzoic acid (HA)...
Please show how you got your answer so I can understand what you
did:) thanks!
Calculate the molar solubility of calcium carbonate in pure water at 25 oC. Kp 4.96 x 10 a. 7.04 x 10-5 M b. 5.54 x 10-6 M c. 1.33 x 10-5 M d. 8.43 x 10-3 M e. 1.03 x 10-5 M
5. Which of the following would decrease the K for PbCl2? 2. Lower the pH of the solution b. Add a solution of Pb(NO3)2 c. Add a solution of KCI d. Both band e. None of the above the Ky of a compound is constant at constant tempera mperature, 6. In which of the following aqueous solutions would you expect AgBr to have the HIGHES solubility? a. 0.10 M LIBE b. 0.10 M AgNO3 c. 0.20 M NaBr d. 0.15...
please explain the answers for these (such as why a
decrease in pH would have no affect in some of the molecules in
picture #2)
iewusg.edu/d2/le/content/1845236/viewContent/27964232/View To improve the quality of X-ray photos used in the diagnosis of intestinal disorders the patient drinks an aqueous suspension of BaSOg before having the X-ray. However, BaSO4 is slightly soluble (Ksp 1.1 x 10-10) and Ba2 is toxic. Which of the following compounds would be the best to add to the suspension in...
I need help I got the wrong
answers and don't understand why.
A polystyrene rod consisting of two cylindrical portions AB and BC is restrained at both ends and supports two 10-kip loads as shown. Take E= 0.45 x 106 psi. - 1.25 in 25 i - 2 in References eBook & Resources Section Break Difficulty: Medium Problem 09.032 - Statically indeterminate structures (constant temperature), composite rods with both ends restrained (D) value: 10.00 points Problem 09.032.a - Reaction at...
This is a practice quiz and I want to make sure I have the
correct answers, please help! thank you!
In
the text I said it was a practice quiz
1. Liquid aluminum will crystalize with a face-centered cubic (fce) unit cell. Face-centered cubic unit cells contain 8 atoms per unit cell. Determine the density of solid aluminum if the radius of an aluminum atom is measured to be 143 pm. (Hint: Calculate the mass and volume to determine the...
I have the answers for this question, however I don't understand
part C - in particular why it seems to be double f(x) and the
variable change to u?
Question 3. Unit Conversion [16 marks] The temperature X in degrees Fahrenheit (F) of a particular chemical reaction is known to be distributed between 220 and 280 degrees with a probability density function of fx(x) = (x – 190)/3600. A value of X degrees Fahrenheit can be converted to Y degrees...
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