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You are checking the accuracy of a volumetric flask marked 10.00 mL. You measure the volume of water contained in the flask by measuring the mass of the empty flask, the mass of the flask filled with water, taking the difference, correcting for the buoyancy factor, and dividing by the density of the water. The result of eight such measurements is given in the table at the right. Calculate the mean and the 95% confidence interval for these measurements.
A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.8635 g of CO2 and 0.1767 g of H2O.
Finding the solubility product - Ksp - of a solution of PbI2, A 1.00 L solution saturated at 25 decrees Celsius with lead (II) iodide contains 0.54 g of PbI2
Reactions of Alcohols, Show how ethanol and cyclohexanol may be used to synthesize cyclohexyl ethyl ether using tosylation followed by Williamson ether synthesis.
A bicycle tire is filled with air to a pressure of 611 kPa at a temperature of 19 degrees C. Riding the bike on a hot day increases the temperature of the tire to 58 degrees C.
What volume would be occupied by 100 g of oxygen gas at a pressure of 1.50 atm and a temperature for 25° c?
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution?
An unknown mass of each of the given substances as with The final temperature is recorded as indicated 1.Pyrex glass (tf=67.6 C), 2.Sand (tf=70.4 C), 3.ethanol (tf=45.9 C), initially at 19.0 degrees celsius, absorbs 1930 Joules of heat
Suppose that 1.06 g of rubbing alcohol (C3H8O) evaporates from a 64.0-g aluminum block. If the aluminum block is initially at 38°C, what is the final temperature of the block
Question about Ideal gas law, Cyclopropane is used as a general anesthetic. If a sample of cyclopropane stored in a 2.00L container at 10.0 atm
Consider the base monosodium phosphate and Write the structure of the conjugate acid of this base- ineffective for extracting C7H6O2 from a diethyl ether solution.
Explain Gibbs-Duhem Equation, In a certain binary solution, the activity of component 1 is given by
Calculate the final temperature when a 16.4 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 72.7 oC. Assume that there is no loss or gain of heat from the surroundings.
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