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Propyl alcohol (CH3CH2CH2OH) and isopropyl alcohol [(CH3)2CHOH], whose space-filling models are shown, have boiling points of 97.2 °C and 82.5 °C, respectively. Explain why the boiling point of propyl alcohol is higher, even though both have the molecular formula C3H8O.
Express the van der Waals parameters a = 0.751 atm dm^6 mol^-2 and b = 0.0226 dm^3 mol^-1 in SI base units
the hydrogen atom relaxes to a lower energy level, emitting light of 397 nm. What is the value of n for the level to which the electron relaxed.
An aqueous solution of sodium hydroxide reacts with an aqueous solution of ammonium chloride, yielding aqueous ammonia, NH3, and water
Provide the mechanism (showing all steps and curved arrows) for the dehydration of 4-methylcyclohexanol in the presence of sulfuric acid.
A mass of 1.37 g of an unknown gas is introduced into an evacuated 1.70 L flask If the pressure in the flask is 0.814 atm at 98 degrees C, which of the following gases might be in the flask?
A 25 ml sample of a copper (ii) solution needs 35.45 ml of 0.2000 M Na2SO3 solution to reach the end point. Compute the molar concentration of Cu2+ in the sample
Depict a stepwise detailed mechanism for the subsequent reaction. Utilize curved arrows to show the movement of electrons. CH3CH2CH2CH2NH2 + 3CH3I ---K2C02---> CH3CH2CH2CH2N+(CH3)3 + 3I-
Compute the pH at the equivalence point for the titration of 0.20M HCL versus 0.20M NH3.For NH3, Kb=1.8x10
Calculate the solubility (in grams per 1.00*10^2mL of solution) of magnesium hydroxide in a solution buffered at pH = 12.S1= 1.2*10^-8 g/(1.00*10^2mL)
Calculate the volume of a sample of nitrogen at -74 ?C and 1.3 atm if it occupies a volume of 4.07 L at 94.6 ?C and 1080 mmHg
calculate the nuclear binding energy per nucleon in 6 sig figs,also in joules. 7. For 129Xe, calculate the nuclear binding energy per nucleon in 7 sig.figs also in joules per nucleon.
how many moles of na2s2o3 react with each mole of kio3 used in the standrdization? what is the oxidition state of a cl in ocl- ,and s in na2s2O3?
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