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Chloroform, formerly used as an anaesthetic and now believed to be a carcinogen, has a heat of vaporizationΔHvaporization = 31.4 kJ mol-1.The change,CHCl3(l) CHCl3(g)hasΔSº = 94.2 J mol-1K-1.At what temperature do we expect CHCl3to boil (i.e., at what temperature will liquid and vapor be in equilibrium at 1 atm pressure)?
The molar mass of an unknown gas was measured by an effusion experiment. It was found that it took 63 s for the gas to effuse, whereas nitrogen gas required 48 s. The molar mass of the gas is
Calculate the pH at the equivalence point if 25.00 mL of 0.010 M barbituric acid (HC4H3N2O3) is titrated with 0.20 M NaOH. (Ka barbituric acid = 1.0 x 10^-5).
Determine which of them exhibit resonance. (In other words, which of the following molecules exhibit resonance? Note: there is more than one answer and you must choose all of the molecules in the list that exhibit resonance.)
what is the volume of 235 ml of a sample of gas at 53.0degc and 740. mm hg if the conditions are adjusted to stp?
When 6.5 ATM of nitrogen reacts with 15atm of hydrogen at a constant temperature in a closed rigid container what is the theoretical yield (in atm) of ammonia
One useful method for recycling scrap aluminum converts some of it to common alum [potassium aluminum sulfate dodecahydrate, KAl(SO4)212 H2O], an important dye fixative and food preservative.
For the subsequent reaction at equilibrium which choice gives a change that will shift the position of equilibrium to favor formation of more products
Why is the structure of FMN and Coenzyme Q important for the function of the electron transport chain
Problem- Sketch a cooling curve for water do not confuse with phase diagram. Make sure it includes: labels for the x and y axis as well as the specific temperatures to indicate a phase change.
If 860 liters of neon at 45°C and 800 mm. are decreased to 700 liters at the same pressure, what is the new temperature of this gas?
Concentrated sodium hydroxide is 19.4 M and has a density of 1.54g/mL. What is the molality of concentrated NaOH?
Problem- In ethane combustion at 2000K and 25% excess air, 50% conversion is achieved at least 10 times earlier at 50 atm than at 1 atm.
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