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The complete combustion of cyclohexane occurs according to the following equation:

For this process, . If values of for  and are –394 and –286 kJ/mol, respectively. What is the value of ?

The radioactively labeled compound [18F]fluorodeoxyglucose (FDG) is used to measure glucose uptake in cells. FDG, a derivative of glucose in which the C2 hydroxyl is replaced with fluorine, is phosphorylated to FDG-6-phosphate upon entering the cell but cannot proceed any further through glycolysis. The phosphorylated FDG remains in the cell, and its presence can be detected and quantitated, providing information on the rate of glucose uptake. (Cancer cells take up glucose particularly rapidly.)

a. Draw the structure of FDG.

b. Why does phosphorylation trap the FDG in the cell?

c. Why is FDG unable to proceed through glycolysis past the hexokinase reaction? (Hint: When glucose-6-phosphate is converted to fructose-6-phosphate, the ring opens, the isomerization reaction takes place, and then the ring closes again.)

d. Is FDG taken up only by cancer cells?

How many sigma bonds are there in phenol?

If the specific gravity of acetic acid is 1.023 at 60 degrees celsius, what is the density?

Need help with making this please and thank you!

What kind of intermolecular forces act between a bromine () molecule and a helium atom? 

Note: If there is more than one type of intermolecular force that acts, be sure to list them all please, with a comma between the name of each force.

A paint contains 177.0 ppm lead. Approximately what mass in grams of lead will be in 1.00 cm² of this paint when 1.00 gal is uniformly applied to 515.0ft² of a wall. The density of the paint is 8.00 lb/gal.

An open vessel containing 0.205 lb of liquid water is placed in an empty room 5 ft wide, 4 ft deep, and 7 ft high, which initially contains dry air at 90 F. All the water evaporates without changing the room temperature. Use the psychrometric chart to estimate the final relative humidity, wet- bulb temperature, humid volume, dew-point temperature, and specific enthalpy of the room air. Take the molecular weight of dry air to be 29.0, and for simplicity, assume the mass of dry air in the room stays constant at its initial value.

A method requires 5 mM ATP (molecular weight 400). The reaction will be carried out in a 250 μL final volume. What volume of each of the stock solutions below (a – d) would you need to add to the reaction to give 5 mM ATP? Which of the stock solutions could NOT be used as a stock ATP solution for this reaction? a. 100 mM ATP; b. 2% (w/v) ATP; c. 100mg/dL; d. 10 mg/mL;

write a well form discussion ( gold nanoparticles and tea solution green chemistry )

Describe the di erences in appearance between the initial gold solution and the result-

ing nanoparticle solution.

Explain how you know gold nanoparticles were synthesized.

Explain how varying the tea solution a ected the gold nanoparticle synthesis.

Explain how this experiment can be categorized as \green."

Discuss possible sources of error.

At 37 °C the equilibrium concentration of inside a cell is 0.085 M and outside is 0.026 M. The cell membrane is permeable to and . The only ion present in addition to  and  is a protein (Prin+/–) inside the cell. The protein holds a single positive or negative charge. The is at equilibrium across the membrane while the protein is inside the cell and cannot permeate the membrane. What is the concentration of Prin+/– (in M)?

2. An enzyme was mixed with a substrate chemical in a 3ml solution in a 1cm cuvette. The resulting enzyme-catalyzed reaction resulted in the production of a product chemical called substance X with an extinction coefficient of 5000 M-1cm-1 and a molecular weight of 120. If the initial absorbance of the solution was 0.2 and the final absorbance of the solution was 0.7 and a blank solution without enzyme showed no change in absorbance, what was the final concentration and mass of substance X?

When aluminum metal is obtained from aluminum oxide (), ________ moles of electrons must be transferred for each mole of aluminum oxide processed.

The purity of a sample of picric acid, C6H3N3O7, isdetermined by controlled-potential coulometry, convertingthe picric acid to triaminophenol, C6H9N3O. A 0.2917-gsample of picric acid is placed in a 1000-mL volumetric flask and diluted to volume. A 10.00-mL portion of this solution istransferred to a coulometric cell and diluted till the Pt cathodeis immersed. The exhaustive electrolysis of the samplerequires 21.67 C of charge. Report the purity of the picricacid.

The feed to the reactor contains ethylene, steam, and an inert gas. A sample of the reactor effluent gas is analyzed and found to contain 43.3 mole% ethylene, 2.5% ethanol, 0.14% diethyl ether, 9.3% inerts, and the balance water. Calculate (a) the molar composition of the reactor feed; (b) the percentage conversion of ethylene; (c) the fractional yield of ethanol and (d) the selectivity of ethanol production relative to diethyl ether production.

The elementary gas –phase reaction is carried out isothermally in a flow reactor with no pressure drop. The specific reaction rate at 50 ^oC is and the activation energy is 85 kJ/mol. Pure di-tert-butyl peroxide enters the reactor at 10 atm and 127 ^oC and a molar flow rate of 53 mol/min.

b. If the PFR is replaced by PBR with a catalyst mass of 100 kg, , what will be the value of pressure drop?

c. Explain what are the parameters that affect the pressure drop across the packed bed reactor.

Additional information:

The kinetics of microbial growth, substrate consumption and mixed-growth-associated product formation in a chemostat culture are given by the following equations:  

The kinetic parameter values are and .

a. Determine the optimal dilution rate maximizing the productivity of product formation (PD).

b. Determine the optimal dilution rate maximizing the productivity of cell (biomass) formation (DS).

If a dose of a few tenths of a microgram of a certain substance is sufficient to kill a mouse, approximately what mass of the substance would be fatal to you? What average level of the substance would have to be present in the water you drink if you were to receive a fatal dose from this source in a week?

1. Express the rate of the reaction: 2N₂O(g)   2N₂(g) + O₂(g)

in terms of
     (a) △[N₂O]      (b) △[O₂]

When 150 mL of 0.125 M lead ions are mixed with 350 mL of 0.175 M chloride ions, how much is the unreacted (in mmol) from the excess reactant?

What mass of sodium formate must be added to 400 mL of 1.00 M formic acid to produce a buffer solution that has a pH of 3.5

How many grams (g) of CaSO₄ is formed when 20 mL of 0.10 M Na₂SO₄ is added to 100 mL of 0.01 M CaCl₂?

2KBr+Cl2 = 2KCl+Br2

What is the mole fraction of calcium chloride in ? The molar mass of  is and the molar mass of water is .

The average shot piece is a cylinder with a diameter of 7.5 mm, a height of 2.0 mm, and a mass of 0.40 g. The average zinc granule is a sphere with a diameter of 0.84 mm. Using these formulas calculate the total surface area for 0.40 g of each form of zinc.

Calculate the energy needed to convert 500 g ice at -50 deg C to steam at 200 deg C.

The freezing point of water is 0.00°C at 1 atmosphere. 

How many grams of cobalt(II) chloride (129.8 g/mol), must be dissolved in 228.0 grams of water to reduce the freezing point by 0.450°C ? Refer to the table below for the necessary boiling or freezing point constant.

If a gas phase composed of the following molar composition: ; and the balance .The gas is burned with 40% excess air. 

1. On the basis of 100 mol of gas, calculate the amount of air needed per 100 moles of the gas.

2. What will be the analysis of the product gas on a wet basis?

3. If 70% of the methane burnt in the third reaction was converted to and the remaining to , how it would affect the feed rate of air assuming 40% excess air?

Draw the structures of trans-1-Bromo-3-methylcyclohexane, cis-1,2-Dimethylcyclobutane, and trans-1-tert-Butyl-2-ethylcyclohexane.

do you need to prepare an 820 point ML of a 1.500M solution of sulfuric acid (H2SI4) if the stock bottle has a monetary of 18.0 M, how much of the stock solution is required

Gravimetric Problemss

1. Why is ADP required in the mitochondrial matrix for electron transport and oxidative phosphorylation to take place?

2. Recently there has been increased interest in the uncoupling proteins. Describe how uncouplers work.

3. What is the role of lipases in cells?

4. Before fatty acids can be oxidized they must be activated. Show the activation reaction.

Two moles of oxygen gas which can be regarded as ideal with Cp = 29.4 JK-1 Mol-1 (independent of temperature) are maintained at 273 K in a volume of 11.35 dm3. . If the system is heated reversibly to 373 K at constant pressure a). What is the final volume? b). How much work is done on the system? c). How much heat is supplied to the system? d). What is the increase in enthalpy? e). What is the increase in internal energy?

A student prepared the graph shown based on the vapor pressure of a liquid over a range of temperatures. The best fit line was found to have the equation

Use this data to calculate the heat of vaporization of the liquid.

Potassium sulfate has a solubility of 15 g/100 g water at 40 ^oC. A solution is prepared by adding 39.0 g of potassium sulfate to 225 g of water, carefully heating the solution, and cooling it to 40 ^oC, a homogeneous solution is obtained. Is this solution saturated, unsaturated, or supersaturated?

If a car uses 10 gallons of gasoline in traveling 160 miles, how many gallons will be required in traveling 500 miles?

How much energy is required to heat 87.1 g acetone (molar mass=58.08 g/mol) from a solid at -154.0°C to a liquid at -42.0°C? 

What mass of solid lead chloride is formed when 150 mL of 0.125 M lead ions are mixed with 350 mL of 0.175 M chloride ions?

The dissolution of in water is endothermic, with .If you were to prepare a 1.00 m solution of beginning with water at 25 ^oC, what would the final temperature of the solution be in ^oC? Assume that specific heats of both pure water and solution are the same, .