This question related to Diels-Alder Reaction of Anthracene and Maleic Anyhydride.
1. Show the product of the reaction of water with the anhydride product
2. The procedure warns against adding a lot of xylene during recystalization. Why?
3. What is the differences in the carbonyl region of the IR between the starting material and the product.
4. What specific band in the IR is unique to the product and confirms that you have made the product and do not have a mixture of the starting material? Explain.
5. Predict the product of the self-dimerization(via Diels-Alder reaction) of cyclopentadiene.;
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Calculate the molar solubility of Ca(IO3)2 in
a) 0.060 M Ca(NO3)2
b) 0.060 M NaIO3
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If you eat a 48 g serving rice every fourth day and you weigh 75 kg, what is your dose of inorganic arsenic (in µg per kg body weight per day) if the rice contains 386 µg kg-1 of total arsenic, 45% of which is inorganic arsenic.
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The following picture represents a sample of gas at a pressure of 1 atm, a volume of 1 L, and a temperature of 25 ?C
What would happen to the pressure if the volume were reduced to 0.4L and the temperature increased to 260?C?
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a cube of osmium metal 1.500 cm on one of its sides. It also has
the mass of 76.31g at 25°C please help me solve this problem by
showing your work so I can compare my answers.
a. what is the density g/cm3 at this temp
b. the density of titanium metal 4.51g/cm3 at 25°C. what
mass of titanium 'displaces' 68.8mL of water at 25°C
c. the density of benzene at 15°C is 0.8787 g/mL. determine the
mass of 0.1900L of benzene at this temp.
Thank you so much!
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1a- Discuss the vaporization of water in standard condition at 298 K in term of: -A exothermicity and endothermicity -Achange of entropy of the system and the surrounding - A spontaneity of the reaction. 1b- Explain how the temperature and the composition of the two phases (liquid and vapour) influence the spontaneity of the vaporization of water. Please show steps and give ample explanation. Thank you
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Please solve
What is the percent dissociation of HNO2 when 0.074 g of sodium nitrite is added to 115.0 mL of a 0.068 M HNO2 solution? Ka for HNO2 is 4.0 × 10–4. (4%)
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How many moles of NH4Cl must be added to 100 mL of 0.1 M NH4OH solution to prevent precipitation of Mn(OH)2 when this solution is added to 100 mL of a 0.002 M solution of MnCl2? Assume no change involume on addition of NH4Cl.
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Write the Total and Net Ionic Equation for the following; make sure to include state symbols
Calcium plus a solution of hydrochloric acid
Chlorine plus a solution of potassium bromide
A solution of ammonium chloride plus sodium hydroxide
A solution of lead(II) nitrate plus a solution of sodium sulfate
A solution of bromic acid plus a solution of sodium nitrate
A solution of calcium nitrate plus a solution of potassium chloride
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The concept of energy charge is a very useful way to think about how ATP levels control pathway activity. Discuss the role of ATP in the glycolytic pathway (between glucose and pyruvate and/or lactate) with a focus on how energy charge would alter the pathway and how the pathway activity would alter energy charge. Include both general aspects and specific ATP use and generation.
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Calculate the standard potential, E°, for this reaction from its equilibrium constant at 298 K. X(s) + Y^2+(aq) ⇌ X^2+(aq) + Y(s) K= 1.43 x 10^-6 E^o = ? V
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calculate [OH−] and pH for each of the following solutions.
1. 6.0×10−2 M NaBrO
2. 7.7×10−2 M NaHS
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Consider the titration of a 25.0 −mL sample of 0.100 M HC2H3O2 with 0.120 M NaOH. Determine each of the following.
the initial pH
Express your answer using two decimal places.
| pH = |
2.87 |
B)
Part B
the volume of added base required to reach the equivalence point in mL?
Part C
the pH at 4.00 mL of added base
Express your answer using two decimal places.
Part D
the pH at one-half of the equivalence point
Express your answer using two decimal places.
Part E
the pH at the equivalence point
Express your answer using two decimal places.
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Consider the equilibrium reaction
CO(g)+H2O(g)⇋CO2(g)+H2(g)
Determine how each change in the left-hand column will stress the system and in which direction the equilibrium reaction will shift in response.
Drag the appropriate labels to their respective targets
| Change | System Stress | Equilibrium shif |
| Add CO(g) | ||
|
Remove H2O(g) |
||
| Add CO2(g) | ||
| Remove H2(g) |
Choices for system stress:
Forward reaction rate temporarily decreases, Reverse reaction rate temporarily decrease, Reverse reaction rate temporarily increases, Forward reaction rate temporarily increases
Choices for equilibrium shift:
increase reactant , increase product, decrease product, decrease reactant
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3.The partition coefficient of Compound A is 7.5 in dichloromethane (a.k.a. methylene chloride) with respect to water.
If 5 grams of Compound A were dissolved in 100 mL of water, how much of Compound A would be extracted with four 25-mL portions of dichloromethane?
Extraction 1:
Extraction 2:
Extraction 3:
Extraction 4:
b.After four extractions, what percentage of the Compound A has been extracted (use percent recovery)?
c.You are tired and want to finish your experiment as quickly as possible. How much dichloromethane would be required in one extraction to remove the same percentage of Compound A that you recovered after four 25-mL portions of dichloromethane?
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