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Determine the boiling point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (d = 0.877 g/mL). Pure benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C/m.
A liter and a half of water is boiling at 105.3C. Assuming standard pressure, how much mass KI must be in water
A sample of hard water contains about 2.0x10-3MCa2+. A soluble fluoride-containing salt such as NaF is added to "fluoridate" the water. What is the maximum concentration of F- that can be present without precipitation CaF2? Ksp of CaF2=5.3x10^-11.
How will the molar mass of an unknown acid be affected if some of the solid remained after the titration was complete. Will the concentration of the molar increase, decrease, or have no effect
Coniine, a toxic substrate solution isolated from poison hemlock, contains only Carbon, Hydrogen, and Nitrogen. combustion analysis of a 5.024g sample yields 13.90mg of CO2 and 6.048mg of H20. what is the empirical formula of Coniine
calculate the E cell when [Zn^+2] = 0.10M and [Cu^+2] = 2.0 x10^-4M. Is the reaction Spontaneous or Non- spontaneous?
in hundreds of thousands of homes across the country family swimming pools and spas require sanitation and maintenance
An unknown compound with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat. From the reaction, only one compound with the formula C8H17Cl can be isolated. What is the structure of the original unknown compound?
At body temperature (98.6F = 37.0C), Kw has the value 2.4X10^14. If the pH of blood is 7.4 under these conditions, what are the concentrations of H3O+ and OH-?
How much heat is gained when a piece of copper metal with a mass of 15 grams is heated from 20 degrees C to 75 degrees C? The specific heat of copper is 0.385 J/g degrees C
A gas occupies 678 ml at 0.935 atm and 70 F, what will its volume be at 1.078 atm and 70 C
in the blood plasma, pH is maintained by the carbonic acid-bicarbonate buffer system. a)how is pH maintained when acid is added to the buffer system? b)how is pH maintained when base is added to the buffer system
what is the density of a sample of ammonia gas, NH3, if the pressure is .928 atm and the temperature is 63.0 C?
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