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Is the solution saturated, unsaturated, or supersaturated? A crystal of solute is placed in a solution and additional solute precipitates out of the solution.
What exactly is ATP? What happens in the kerbs cycle and why does it happen and how same as above for the electron transport chain?
A 21.0%solution of the nonvolatile solute ethylene glycol, C2H4(OH)2,in water is prepared. The vapor pressure of water at 20°C is 17.5 torr. Determine the change in vapor pressure of the s
Determine the numbers of grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 102 g of methanol to obtain a solution with a vapor pressure of 132 torr? The vapor pressure of pure me
Can you check the purity of your product by TLC using ethyl acetate as an elution solvent? Caffeine is soluble in ethyl acetate.
Determine the general concept behind the dipole moments of carbonyl compounds with electron donating and electron withdrawing groups.
How can write down the sequence that involve thiols and will convert the acetone to propane? How can calculate the electronic structure of the carbonyl group?
How can write the reaction for a Fischer etherification that would convert butanoic acid to ethyl butanoate. What needs to be done to drive the reaction toward the ethyl butanoate product?
What is the minimum pressure in atm needed to desalinate seawater by reverse osmosis, Use these data to estimate the osmotic pressure of seawater at the 25°C in units of atm.
The acid catalyzed hydrolysis of amides to form carboxylic acids is not reversible. The acid catalyzed hydrolysis of esters to form carboxylic acids is reversible. Why is the second reaction irreve
The concentration of acetone in a certain aqueous solution is 4.50 M. If 250.0 mL of this solution is diluted to 300.0 mL determine the numbers of moles of acetone will be present in the diluted sol
Determine the numbers of additional equivalents of acid will be consumed during the production of 5M of nitrogen if all the oxygen in the nitric acid is converted to water.
Illustrate the product of the reaction where methyl magnesium bromide attacks the Re face of 3-hexanone followed by the H+. Be sure to clearly demonstrate the AND label your product R or S.
Write down the mathematical expression/equation for calculating inherent error of NA (i.e. Na/Na) The equivalence point is the point when the number of equivalents acid equals to the number of equiv
What is the rate constant for the reaction in the units' min-1if it takes 68.9 minutes for the concentration of a reactant to drop to 20% of its initial value in a first-order reaction?
A particular drug used in animals is eliminated metabolically by a first-order process in such a way those 2.76 hours after the initial dose of 29.7 mg/kg body weight had dropped to a level of 13.6
At 4062 minutes after a particular experiment had begun, the HI concentration was equal to0.00045 mol/L. The second-order rate constant for the decomposition of HI at700 °C is 1.6*10-3L/mol/s.
Identify the element in the test tube. Is sugar one of the elements? When sugar is burned a black material is left in the test tube along with what appears to be drops of water on the side.
What mass of N2 gas was collected? At 20º C, the vapor pressure of water if 17.5 torr. A sample of N2 gas was collected over water at 20º C at a total pressure of 1.00 atm. A total
When the wire is struck a transverse blow at one end, determine how much time does the pulse take to reach the other end?
What is the vapor pressure at 20C above a solution that has 85.5g of sucrose and 75 g of urea [CO(NH2)2] dissolved per kg of water when the vapor pressure of pure water at 20C is 17.5 torr.
Explain why can methyl orange or phenolphthalein be used for an HCl-NaOH titration, but only phenolphthalein is suitable for acetic acid-NaOH titration?
Initially at 20 C and 1 atm pressure, a sample of benzene is subjected to a pressure of 11 atm at 50 C. assuming α and β to be constant, identify the percentage change in volume of the b
Identify the percentage change in the volume exhibited by an ideal gas initially at the 20 C and 1 atm pressure then subjected to a pressure of 11 atm at 50 C.
The time of efflux of H2O through Ostwald viscometers 1.52 minutes. For the same volume of an organic liquid of density 0.800 g/cc the time is 2.25 minutes.