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What is the heat of fusion of ethanol in calories per mole? The heat of fusion for ethanol is 45.2 cal/g. The molar mass of ethanol is 46.0 g/mol.
1. What is the ph of a solution that results from adding 250 ml of .50 m naoh to 750 ml of .50 m hf? 2. What is the ph of a buffer composed of .035 m h2po4 and .65 m hpo4?
Calculate ?Svap for each of the liquids. Do all the liquids obey Trouton's rule? With reference to intermolecular forces, can you explain any exceptions to the rule?
The dimensions of a box are 1.00 foot by 279 mm by 5.5 inches. What is the volume of the box in mL
Calculate the amount of PV work done. c2h4(g)+h2(g)-->c2h6(g) Express your answer using two significant figures. The addition of H2 to C=C double bonds is an important reaction used in the preparation of margarine from vegetable oils.
opportunism in health care is especially perceptible in the health insurance markets. consider the area in which you
Using bond enthalpies, estimate the heat of the gas phase reaction of methane with bromine to form methyl bromide and hydrogen bromide.
Explain the following data are given for . Normal melting point, -23C , normal boiling point, 77C; density of liquid 1.59g/ml ;vapor pressure at 25C , 110 Torr.
Phosphate standards used to generate the calibration curve are usually made by first preparing a stock solution of known concentration.
The decomposition reaction given below: 2 NH3(g) 1 N2(g) + 3 H2(g) is carried out in a closed reaction vessel. If the partial pressure of NH3(g) is decreasing at the rate of 131 torr/min, what is the rate of change of the total pressure in the ves..
A 0.481 gram sample of an unknown acid (HX) required 28.95 mL of 0.2103 M NaOH for neutralization to the phenolphthalein end point. What is the molar mass of the acid
what is the easiest way to identify the structure of a molecule from a H-NMR spectra?
If the Rate constant in SI Units for NO formation is 1.8x10^8 exp(-38,370/T) as well as the reaction rate at 1870 Celsius and 2 atm can be approximated as 2k[N2][O] with the mole fractions of N2 as well as O being approximately 74% and .15%,
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