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A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 13.13 % naphthalene by mass.
Calculate the vapor pressure at 25 C of hexane above the solution. The vapor pressure of pure hexane at 25 C is 151 torr.
What is the molar mass of X if 0.85g of X depresses the freezing point of 100g of benzene by 0.47Cdegrees?
Sucrose, C12H22O11, reacts slowly with water in the presence of an acid to form two other sugars, glucose and fructose, both of which have the same molecular formulas, but different structures. C12H22O11 + H2O ? C6H12O6 (glucose) + C6H12O6 (fructo..
For which of the following would nitration (via Electrophilic aromatic substitution) occur in the ortho- and para- position?
A balloon is filled to a volume of 7.00 x 102 mL at a temperature of 20.0 oC. The balloon is then cooled at constant pressure to a temperature of 1.00 x 102 K.
Suppose that microwave radiation has a wavelength of 11.2cm. How many protons are required to heat 245mL of Coffee from 25.0 C to 62.0C? Assume that the coffee has the same density,
A balloon filled with H2 (g) at 0.0 °C and 1.00 atm has a volume of 2.24 L. What is the final gas volume if 0.10 mol He (g) is added to the balloon and the temperature is then raised to 100 ° C while the pressure and amount of gas are held constan..
Draw the molecule by placing atoms on the grid and connecting them with bonds. Do not identify the charge on each of these species. Include all lone pairs of electrons.
HEPES are synthetic amine compounds that are often used to make buffers for biochemical studies. What is the pH of a 1.0 L buffer solution that is 0.250M HEPES
One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas
if you prepare a 1.00 m solution of nh4clo4 beginning with water at 22.5 c what is the final temperature of the
draw a series of titration curves for the titration of a strong base with anbsp strong acid where the concentration of
How many grams of water can be cooled from 34°C to 11°C by the evaporation of 85 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g-K.)
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