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Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Compute the pH of a solution containing an amphetamine concentration of 219 mg/L.
A sample of air was compressed to a volume of 27.0 L. The temperature was 297.0 K, and the pressure was 8.70 atm. How many moles of gas were in the sample
at 25.0degc a sample of xe gas occupies 545 ml in a piston-cylider apparatus when the external pressure is 751 torr. at
calculate the concentrations of all species in a .890 m sodium sulfite solution. the ionization constants for sulfurous acid are ka1= 1.4x10^-2 and ka2=6.3x10^-8
what type of electronic probe could be used to determine the pressure inside the
How many moles of N2 molecules are present in a 0.151 L sample of dry air at 0.0356 atm and 23.8 °C ? (The mole fraction of N2 = moles of N2 / total moles of dry air = 0.7809.)
An aqueous solution of nitrous acid (HNO2) has a ?G= 19.1 kJ. What is the pH when [NO2-]=1.00 M, [HNO2]=1.00 M, and the ?G=0?
If C6H12O6 >>> 2 C2H5OH + 2 CO2 represents the fermentation of sugar to produce alcohol, and reaction is only 40.0% efficient (% yield), what is the actual yield of alcohol from 454g of C6H12O6
If I add 1.65 L of water to 112 grams of sodium acetate what is the molality of NaC2H3O2 in this solution?
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first ..
pottassium bromide kbr is soluble in the extent of 64 g per 100 g of h2o at 20 degree c. is the solution saturated or
Assuming the delta S does not change with temperature, estimate the temperature at which iodine would sublime.
In the photosythesis process sugars are produced during the reaction of carbon with water Assuming air is composed of 0.030% carbon dioxide calculate the volume of air required at reference conditions to produce 1.0kg of sugar.
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