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If 0.140mol of a nonvolatile no electrolyte are dissolved in 3.30mol of water, explain what is the vapor pressure PH2O of the resulting solution? Explain the vapor pressure of pure water is 23.8 torr at 25 °C, how to calculate this
In a laboratory experiment, students synthesized a new compound and found that when 14.10 grams of the compound were dissolved in 208.0 grams of ethanol, the solution began to boil at 78.9510C
The concentration of the diluted glucose solution was found to be 5.000 mM (5.00 x 10-3 M). Calculate the concentration of the stock glucose solution.
What is the molecular weight of thiopene, if 0.74 g of thiopene occupies a volume of 270 mL at 760 mmHg and 100 degrees C?
at room temperature 20circ rm c milk turns sour in about 63 hours. in a refrigerator at 3circ rm c milk can be stored
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
Calculate the pH of a solution containing 25.00 mL of 0.12 M formic acid (Ka = 1.7 x 10^-4) to which the following amounts of 0.10 M NaOH have been added:
Calculate the concentration of sugar in % (w/v) for a 250mL solution that contains 4.32g of sugar
The Ksp for Zn(OH)2 is 5.0 x 10-17. Determine the solubility of Zn(OH)2 in a solution with pH of 11.50.
Calculate the pH and pOH of each of the following solutions. [H3O+] = 1.5x10^-8 M? [H3O+] = 1.0x10^-7 M? [H3O+] = 2.2x10^-6 M
A solution contains 10.90g of unknown compound dissolved in 50.0mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -6.53C. What is the molecular formula of the compound
An experiment shows that a 250 mL gas sample has a mass of 0.430 g at a pressure of 728 mmHg and a temperature of 26 C. What is the molar mass of the gas?
N-t-Bu-BN-indole undergoes electrophilic aromatic substitution regioselectively at the 3-position. Draw an orbital bonding diagram for N-t-Bu-BN-indole. Show only the p-orbitals that overlap in the aromatic p-system. Which lone pairs must be inclu..
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