Homework Answers
Steam distillation is a type of separting process where the substances are steam volatie and immiscible with water.
It is used to purify the liquids which are not very volatile. It separate=s the liquids having a temperature difference of >70oC.
The boiling point of water is 100 oC
boiling point of methanol is 64.7 oC
boiling point of p-dichlorobenzene is 174 oC
boiling point of ethylene glycol is 197.3 oC
(a) for methanol and water the temperature difference is < 70 oC.
Therefore, the steam distillation is not used for this mixture.
so the correct option is Flase.
(b)
for p-dichlorobenzene and water the temperature difference is > 70 oC.
Therefore, the steam distillation is used for this mixture.
so the correct option is true.
(c)
for ethylene glycol and water the temperature difference is > 70 oC.
Therefore, the steam distillation is used for this mixture.
so the correct option is true.
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label each chiral center
1. True or False. Steam distillation would be the procedure of choice...
Put a * next to each chiral center, then label them as R or S, make...
Put a * next to each chiral center, then label them as R or S,
make sure number your priority connections.
Br hstySteps b) emstry Stps c) а) NH2 Chm St Chemisty Seps Chemistry Stp OH e) d) (CxB) Chemistry Sts Chemsty St CN i) h) g) Br Chemistry St Chemistry Stepa Chemisty Sep ZI O=
Draw leucine at physiological pH and label the chiral carbon center (1) Draw the molecule on...
Draw leucine at physiological pH and label the chiral carbon center (1) Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates appropriate atom(s) by selecting each atom and assigning it a map number of 1 until all atoms are mapped. To do this, and choose Atom Properties. (Mac users: Use an equivalent for right-clicking.) Then, clear the check mark to enable the entering a value. DcaQ H: HNL CH 1-A0oooood...
4. True or False. Label each of the following statements as true or false. If true,...
4. True or False. Label each of the following statements as true or false. If true, give a proof, if false, give a counterexample. (a) Every nontrivial subgroup of Q* contains some positive and some negative numbers (b) Let G be a finite group. Let a E G. If o(a) 5, then o(a1) 5. (c) Let G be a group and H a normal subgroup of G. If G is cyclic, then G/H is also cyclic. (d) Le t R...
Review Part D Draw threonine at physiological pH and label the chiral carbon center (1). Draw...
Review Part D Draw threonine at physiological pH and label the chiral carbon center (1). Draw the molecule on the canvas by choosing buttons from the Tools (for bonds an Templates toolbars. Identify the appropriate atom(s) by selecting each atom and ass 1 until all atoms are mapped. To do this, right-click on an atom and choose Atom Pro an equivalent for right-clicking.) Then, clear the check mark to enable the Map field D . H20 Om Part C Draw...
I. Label each of the following statements true, false, or uncertain. Explain your choice carefully. A...
I. Label each of the following statements true, false, or uncertain. Explain your choice carefully. A fiscal expansion, all other factors equal, tends to increase net exports. Fiscal policy has a greater effect on output in an economy with fixed exchange rates than in an economy with flexible exchange rates. Other things equal, the interest parity condition implies that the domestic currency will appreciate in response to an increase in the expected exchange rate. If financial investors expect the dollar...
Let A and B be nxn matrices. Mark each statement true or false. Justify each answer....
Let A and B be nxn matrices. Mark each statement true or false. Justify each answer. Complete parts (a) through (d) below. a. The determinant of A is the product of the diagonal entries in A. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The statement is false because the determinant of the 2x2 matrix A = is not equal to the product of the entries on the main...
Given Ho: p= 12.5 and Ha:p> 12.5. Classify each of the following as true or false....
Given Ho: p= 12.5 and Ha:p> 12.5. Classify each of the following as true or false. (a) A Type I error would occur if the sample data lead to rejection of the null hypothesis, when in fact u= 12.5. O True O False (b) A Type Il error would occur if the sample data lead to rejection of the null hypothesis, when in fact p > 12.5. 0 True O False (c) A Correction Decision would occur if the sample...
Question 5-9 Answer the question True or False (Each question is worth 1 p) 1. If...
Question 5-9
Answer the question True or False (Each question is worth 1 p) 1. If A and B are mutually exclusive, then A and B are i A) True B) False 3. The sample standard deviation of a sample of data points must not be negative. 4. High school GPAs are qualitative data 5. Sample is one of the 6 elements of Statistics A) True B) False A) True B) False A) True 6. Let X be the length...
Name: True/False & Multiple Choice (2 points each) (True / False ) 2 A char literal...
Name: True/False & Multiple Choice (2 points each) (True / False ) 2 A char literal '2', a string literal "2", and the numeric literal 2 are identical and stored the same way though they are different types. 3 Since comments do not affect the program execution, you don't need to have it at all. 4. After the following statements are executed, the value of the variable rem is 3. 1. A preprocessor directive line starts with a pound sign...
Problem 1: Benefit Estimation Methods Please clearly label each statement True or False and explain your...
Problem 1: Benefit Estimation Methods Please clearly label each statement True or False and explain your reasoning. a) Revealed preference techniques can be used to estimate non-use value (e.g., existence value). b) Unlike revealed preference techniques, stated preference techniques are immune to “behavioral” phenomena (e.g., hyperbolic discounting). c) Revealed preference and stated preference techniques should be used jointly when possible.
Put a * next to each chiral center, then label them as R or S,
make sure number your priority connections.
Br hstySteps b) emstry Stps c) а) NH2 Chm St Chemisty Seps Chemistry Stp OH e) d) (CxB) Chemistry Sts Chemsty St CN i) h) g) Br Chemistry St Chemistry Stepa Chemisty Sep ZI O=
Draw leucine at physiological pH and label the chiral carbon center (1) Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates appropriate atom(s) by selecting each atom and assigning it a map number of 1 until all atoms are mapped. To do this, and choose Atom Properties. (Mac users: Use an equivalent for right-clicking.) Then, clear the check mark to enable the entering a value. DcaQ H: HNL CH 1-A0oooood...
4. True or False. Label each of the following statements as true or false. If true, give a proof, if false, give a counterexample. (a) Every nontrivial subgroup of Q* contains some positive and some negative numbers (b) Let G be a finite group. Let a E G. If o(a) 5, then o(a1) 5. (c) Let G be a group and H a normal subgroup of G. If G is cyclic, then G/H is also cyclic. (d) Le t R...
Review Part D Draw threonine at physiological pH and label the chiral carbon center (1). Draw the molecule on the canvas by choosing buttons from the Tools (for bonds an Templates toolbars. Identify the appropriate atom(s) by selecting each atom and ass 1 until all atoms are mapped. To do this, right-click on an atom and choose Atom Pro an equivalent for right-clicking.) Then, clear the check mark to enable the Map field D . H20 Om Part C Draw...
I. Label each of the following statements true, false, or uncertain. Explain your choice carefully. A fiscal expansion, all other factors equal, tends to increase net exports. Fiscal policy has a greater effect on output in an economy with fixed exchange rates than in an economy with flexible exchange rates. Other things equal, the interest parity condition implies that the domestic currency will appreciate in response to an increase in the expected exchange rate. If financial investors expect the dollar...
Let A and B be nxn matrices. Mark each statement true or false. Justify each answer. Complete parts (a) through (d) below. a. The determinant of A is the product of the diagonal entries in A. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The statement is false because the determinant of the 2x2 matrix A = is not equal to the product of the entries on the main...
Given Ho: p= 12.5 and Ha:p> 12.5. Classify each of the following as true or false. (a) A Type I error would occur if the sample data lead to rejection of the null hypothesis, when in fact u= 12.5. O True O False (b) A Type Il error would occur if the sample data lead to rejection of the null hypothesis, when in fact p > 12.5. 0 True O False (c) A Correction Decision would occur if the sample...
Question 5-9
Answer the question True or False (Each question is worth 1 p) 1. If A and B are mutually exclusive, then A and B are i A) True B) False 3. The sample standard deviation of a sample of data points must not be negative. 4. High school GPAs are qualitative data 5. Sample is one of the 6 elements of Statistics A) True B) False A) True B) False A) True 6. Let X be the length...
Name: True/False & Multiple Choice (2 points each) (True / False ) 2 A char literal '2', a string literal "2", and the numeric literal 2 are identical and stored the same way though they are different types. 3 Since comments do not affect the program execution, you don't need to have it at all. 4. After the following statements are executed, the value of the variable rem is 3. 1. A preprocessor directive line starts with a pound sign...
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