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Pure ethanol boils at 78°C, but an ethanol solution containing glycerol (condensed formula: CH2(OH)CH(OH)CH2(OH)) does not. If 4.66 g of glycerol has been dissolved in 125 g of ethanol:
a. What is the molality of the solution?
b. At what temperature does the solution begin to boil? (Kb = 1.22°C /m)
Construct the appropriate calibration curve as described in this lab and determine the %(W/W) of fluoride in the original toothpaste sample:
For the same atoms at the lattice points, which lattice exhibits the lowest density? (please explain your reasoning) (A) body-centered cubic (B) face-centered cubic
The following reaction is known to have a standard change in enthalpy of 148 kJ/mol and a standard change in entropy of 312 J/(mol•K) at 25ºC. What is the normal boiling temperature (ºC) of XY3? XY3(l) ? XY3(g)
When operational in the determination of the calorimeter constant, a DC power source reads 3.60 volts and 2.65A. The resulting thermogram has a slope of 0.0438 degrees C/
What are the regulatory points of the citric acid cycle?
12.0 moles of a gas (SO2) under non-ideal conditions was measured to have a pressure of 1.00*10^2 atm in a 3.00 L container. What is the temperature. the van der Waals constants for SO2 are a= 6.865L atm /mol and b=0.05679L/mol.
question the initial concentration of a reactant in the first order is .28m. the rate constant for the reaction
Write the solubility product constant for the following compounds: Lead(3) Phosphate and Silver Chloride.
The following data were collected for the reaction of tbutylbromide (CH3)3CBr) with hydroxide ion at 55 degrees Celsius: equation:
Looking at the structures for blue indigo and white indigo, how can you tell that white indigo is the reduced form. What chemical process happens as the fabric dries
An oxide of iron is found to be 77.75% iron by mass. Determine the empirical formula for this compound and name it.
An insulated tank contains half liquid and half vapor by volume in equilibrium. The release of a small quantity of vapor without the addition of heat will cause
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