blushcaribou268

Which of the following trends in lattice energy is due to differences in ionic radii? 

a.  

b.  

c.  

d. All of the above

Fatty Acid Synthase

a. Requires the acyl carrier protein (ACP)

b. Acts in the mitochondrion

c. Yields the product acetyl CoA

d. A and B above

e. A, B, and C above

1. Ethane differs from propane and propane differs from butane by what group of atoms? Explain?

2. Given the pentane is the next large compound in the alkane series (compounds with names ending with -ane), what is the expected chemical formula for pentane?

The reduction reaction in this experiment uses up ions. This produces ions in solution. What you see as rust is a precipitate that forms between Iron(III) ions and hydroxide ions. Write this reaction below.

A drug administered to a patient usually is consumed by the first order process. Suppose that a drug is administered in equal amounts at regular intervals and that the interval between successive doses is equal to the half-life for the disappearance process (to the time that it takes for the fraction to be consumed). Prove that the maximum concentration of the drug in the patient's body is equal to times the concentration produced by an individual dose.

Answer this question.

Name the heterocyclic substituent found in the molecule shown according to the general type of nitrogen-containing ring to which it belongs.
The structure of a compound is given as a Haworth projection. It is in furanose form, or a pentagon, with an at its top vertex. One can numerate carbon atoms clockwise starting from next to . Then a six-membered ring, , , and a group are attached above the plane of the ring to its carbons in the order of numeration. While , , , and are attached below this plane, correspondingly. The six-membered ring has a double bond between the second and third (clockwise) and between the fourth and fifth carbon atoms, an oxygen atom attached to the sixth carbon atom by a double bond, and an group attached to the fourth carbon atom. The first carbon atom of the six-membered ring is attached to the pentagon. The first and fifth members of the ring are nitrogen atoms. The group has the following structure: , with two minus ions attached to the P atom and a double bond between the P atom and the second (from left to right) atom.

Enter the name of the heterocyclic amine.

How is the concentration of hydronium ion related to the concentration of hydroxide ion?

Determine the concentration of a solution of ammonium chloride () that has at .

How could you distinguish between cyclohexane and cyclohexene using IR?

The procedure of describing electrons in an atom according to energy leads to the electron________of the atom.

A gravimetric analysis is performed to determine the sodium chloride content of a mineral water by precipitating the chloride ions as silver chloride. The experiment is conducted carefully but the result obtained by precipitation differs considerably from the result obtained through atomic absorption spectroscopy. The most likely cause of the discrepancy is that?

The mass of of an unknown gas sample is . It is collected by water displacement in a eudiometer tube at a temperature of and a barometric pressure of . It is carefully placed into a larger cylinder with water. The water level inside the tube is lower than the water level outside the tube. What is the partial pressure of the unknown gas? The number of moles of the unknown gas and the molecular mass of the gas?

Using the Table of Standard Reduction Potentials

Balance the following equations using the table of half-reaction potentials, determine the and tell whether the reaction will proceed spontaneously or not, and why (don't worry about phase):

1.

Half-cell reactions	Standard potential () in Volts

2.

Half-cell reactions	Standard potential () in Volts

3. 

Half-cell reactions	Standard potential () in Volts

4. 

Half-cell reactions	Standard potential () in Volts

5. The manganese (II) ion and solid lead react to produce solid manganese and the lead (II) ion.

Half-cell reactions	Standard potential () in Volts

6. The nitrate ion and the tin (II) ion react to produce nitrogen dioxide and the tin (IV) ion.

Half-cell reactions	Standard potential () in Volts

In which of the following aqueous solutions would you expect to have the lowest solubility?

a. pure  

b.  

c.  

d.  

What is the energy, in Joules, of one mole of photons associated with visible light having a wavelength of ?

a.  

b.  

c.  

d.  

Given the reactions:

What is the estimated bond energy in ?

a.  

b.  

c.  

d.

The absolute standard entropy of atom is . Which is a reasonable value for the absolute standard entropy of ?

a.  

b.  

c.  

d.  

e.  

What are the products of one singular nitration of benzene? 

Assume water is not the base in the final stage of the mechanism.

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What would be the product of the following reaction?

Benzene + Cl₂ + AlCl₃

_{__________________________________________________________}

Fill in the gap in the following sentence:

Alkenes will undergo … reactions with bromine (Br₂), whereas benzene will undergo … reactions with bromine in the presence of a suitable catalyst

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Free radical chain reactions are not limited to the halogenation of alkanes.  Using your knowledge from this latter reaction, identify the name that describe the reaction shown:

I₂ 

⟶⟶2 I

Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water.

Group of answer: 

a) 6

b) 5

c) 3

d) 2

e) 4

Choose the best option for the immediate precursor to the target molecule  from benzene.

Write the chemical formulas of the major species present at equilibrium. 

Write the chemical formulas of the species and indicate which will act as an acid, base, or that will act as neither acids nor bases.

1.) 1.8 mol of HCl is added to 1.0 L of a 1.0 M NH3 solution.

2.) 0.53 mol of NaOH is added to 1.0 L of a solution that is 1.1 M in both NH3 and NH4Cl

Write the chemical formulas of the major species present at equilibrium. 

Write the chemical formulas of the species and indicate which will act as an acid, base, or that will act as neither acids nor bases.

1.) 1.8 mol of HCl is added to 1.0 L of a 1.2 M NH3 solution.

2.) 0.54 mol of HCl is added to 1.0 L of a solution that is 1.1 M in both NH3 and NH4Cl

Can someone help me with these problems.

a. It does not ionise at all in solution.

b. The van’t Hoff factor for reflects dissociation into its ions. 

c. The  solution boils at  at . Calculate the van’t Hoff factor for the solute in this solution.

Fill the three 3d subshells with the specified number of electrons 

The amount of oxygen present in the blood depends in part on the partial pressure of inspired oxygen in the trachea, P_IO2. This can be calculated from the barometric pressure, the fraction of O₂ molecules in dry air, and the vapor pressure of water at body temperature (because inhaled air is humidified in the trachea).

20.9% of the molecules in dry air are O₂ molecules and the vapor pressure of water at body temperature (37 °C) is 47 mm Hg. Taking the total pressure of the humidified inhaled air to be equal to the barometric pressure, calculate the P_IO2 for a person in Leadville, CO (elevation 3025 meters), if the prevailing barometric pressure is 515 mm Hg.

Commercial copper mining operations convert CuS or CuO ore into copper metal by smelting the ore in air. Solid Cu produced in this fashion is ~99% pure. However, most Cu uses require Cu that is 99.99% or greater in purity. To remove that last ~1% of impurities, Cu smelting operations electrolytically refine Cu by placing impure Cu cathode ingots in a CuSO and sulfuric acid mixture with a steel plate acting as the anode. The mixture is subjected to a voltage of 0.35 V and current of 380.0 amps. Cu is oxidized to Cu(aq) ions, which migrate to the steel anode where they are reduced back to Cu(s). Any impurities in the copper (primarily Au, Ag, and Pt) precipitate into the solution. How long, in hours, must the company run this process to purify 200 pounds of Cu?

At 30C, the titration of a 5.0 mL sample of succinic acid required 29.56 mL of 0.950 M
NaOH. Find the concentration of succinic acid in moles/liter.

Write an equation that represents the action in water of ammonium hydroxide as an Arrhenius base.

If 25 ml. of 0.20 M NAOH is added to 20 mL of 0.25 M boric acid, what is the pH of the resulting solution?

which of the filtering methods would you expect to give a large yield ?

1. explain how would you prepare 500.0ml of 0.300m solution sulfate froma concentrated 4.500m sodium.sulfate solution .include the calculation for the.volume of concentrated solution required,all steps to prepare the diluted solution and the glassware indeed. assume the diluent in reverse in osmosis water.

Explain how the reactions of ozone in the stratosphere are responsible for the relatively warm temperatures of the stratosphere?

The element oxygen was prepared by Joseph Priestley in 1774 by heating mercury(II) oxide: HgO(s) ® Hg(l) + ½O₂(g), DH° = 90.84 kJ/mol.

Estimate the temperature at which this reaction will become spontaneous under standard state conditions.

S°(Hg) = 76.02 J/K · mol

S°(O₂) = 205.0 J/K · mol

S°(HgO) = 70.29 J/K · mol