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Propane has a normal boiling point of -42.0°C and a heat of vaporization (ΔHvap) of 19.04 kJ/mol. What is the vapor pressure of propane at 25.0°C?
Express the pressure in torrs to three significant figures.
Two students prepare two cyclohexane solutions having the same freezing point. Student 1 uses 26.6 g of cyclohexane solvent, and student 2 uses 24.1 g of cyclohexane solvent. Which student has the greater number of moles of solute Show calculation..
A hydrochloric acid solution is standardized using 0.500g of sodium carbonate, Na2CO3. Find the molarity of the acid if 29.50mL are required to reach a phenolphthalein endpoint.
Nitric oxides, NO and NO_2, contribute to air pollution, acid rain, and the depletion of the ozone layer. After NO forms in the combustion chamber of an automobile engine, it reacts further with oxygen to form NO_2. The reaction is given by 2NO (g..
the enthalpy of fusion of methanol is 3.16 kjmol. how much heat would be absorbed or released upon freezing 25.6 grams
Problem- Describe clearly (using the correct terminologies) a simple visual test to distinguish an acid from a base. Please answer in a complete sentences.
The vapor pressure of br2(l) at 25C is 228 mm hg. if 2.00g of br2 is usedm what is the final pressure in the flask? will there be liquid in the flask.
Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.21%abundance), X-29 (28.976 amu, 4.70% abundance), and X-30 (29.974 amu, 3.09%abundance). Calculate the atomic weight of X.
potassium chromate has an absorbance value 0.670 in a cell of 1.00cm path-length at a wavelength 370nm. the value of
What are its values of DeltaG of vaporizatoin and DeltaS of vaporization at 61 degrees Celsius?
Question- Initially a mixture contains .850 mol each of N2 and O2 in an 8.00 L vessel. Find the composition when equilibrium is reached at 3900°C. The reaction is: N2 (g) + O2 (g) 2NO (g) Kc= .0123 at 3900°C.
In what form is the product (the chlorobenzoic acid) in the clear filtrate after the brown precipitate has been removed. After the addition of the hydrochloric acid
The solid and toluene together weigh 58.34 g. The density of toluene at the temperature of the experiment is 0.864 g/mL. What is the density of the solid?
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