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The normal freezing point of benzene is 5.5 degrees C. A benzene solution contains 62.5 mg of naphthalene (MW = 128g/mol) per 1.00g benzene. The solution freezes at 3.0 degrees C. What is the molal freezing point constant for benzene?
An unknown gas X effuses 1.65 times faster than C3H8. What is the molecular mass of gas X?
What is the percent purity of the calcium hydroxide if the titration requires 13.88 mL of the acid to reach the endpoint
Write the condensed electron configuration ( using the noble gas electron configuration) of antimony. How many electrons are unpaired. Please show all work and provide all steps.
Your stock solutions are 20% glucose, 1M tris and 0.5M EDTA. The diluent is distilled water. Determine how much of each you will add to make the desired buffer.
How old is a bottle of wine if the tritium (3H) content is 25% that of a new wine? The half-life of tritium is 12.5 years.
A rigid plastic container holds 1.00 L methane gas at 630 torr pressure when the temperature is 20.3°C. How much more pressure will the gas exert if the temperature is raised to 44.3°C?
what is the chemical calculation to figure out the follow: how many moles of the indicated solute does the following contain, 12.5 mL of 0.104 M HCL
Assuming the kinetics of teh microorganisms enzymatic action is responsible for the rate of decay
A solution is prepared by dissolving 13.3 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 11.50 mL sample of this stock solution
The carboxylate groups in sugammadex play an important binding role in locking rocuronium into the central cavity of the cyclodextrin, but they also have an important role in allowing the drug access to the cavity.
The standard molar entropy for Br2(g) is 245.46j/(mol*K) at 25 degrees Celsius. Given that delta S=104.58J/K for the dissociation of one mole of Br2(g) into Br(g) at 25 degrees, find the standard molar entropy for Br(g) at 25 degrees Celsius.
calculate the change in entropy (?S), the change in internal energy (?U), and the change in enthalpy (?H) for a reversible adiabatic expansion of this gas to a final pressure of 1.10 atm. Also calculate the final temperature (T) and volume (V).
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