Determine the experimental vant hoff factor
Question: The freezing-point depression of a 0.100 m (molality) MgSO4 solution is 0.225 degrees Celsius. Determine the experimental van't Hoff factor of MgSO4 at this concentration.
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The normal boiling point of hydroquinone is 310°C. Calculate the pressure at which hydroquinone will boil at 200°C given that its Hvap is 73.38 kJ/mol.
Calculate the volume of carbon dioxide gas at stp, produced when 651g of ammonia carbonate (NH4)2CO3 decomposes to produce ammonia gas (NH3) carbon dioxide and water vapor. Calculate the total volume of all gases produced under those conditions.
which of the following is always spontaneous A. C2H6O + 3O2 = 2CO2 + 3H2O; delta H is smaller than 0 B. the sublimation of dry ice ( CO2) C. the freezing of water (H2O) D. the formation of water from its gaseous elements D. None of the above.
if titration of 20.0 mL of 1.50 M H2SO4 solution requires 25.0 mL of NaOH to reach equivalence point, what is the molarity of the NaOH titrant
An electrochemical cell has an Eocell of 2.00 V and transfers 1 mole of electrons. The Faraday constant is 96,485 C/mol e-. What is the value of delta G
What law states that mass and energy can be changed from one form to another but their sum remains constant?
Calculate the change in enthalpy when 52.0 g of solid chromium at 25 degrees celcius and 1 atm pressure is oxidized. (delta h for Cr2O3(s) is -1135 kJ/mol.)
The molecule H2S2 has a linear arrangement of its atoms. Number all sulfur atoms along the chain from 1 to 4. Find the oxidation number of each sulphur in the molecule from the first to the fourth.
A mass of 0.0600 g of magnesium metal is completely reacted with excess hydrochloric acid. Write the balanced equation to answer the question. What volume of the gas at STP would be produced
A bowl of 510 g of water is placed in a microwave oven that puts out 611 watts (J/s). How long would it take in seconds to increase the temperature of the water from 12.0oC to 49.5oC
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