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Determine the osmotic pressure in atm of a non-volatile solution with a concentration of 0.710 M at a temperature of 34.2 ºC
Teeth are made principally from the mineral hydroxyapatite, Ca5 (PO4)3OH, which can be dissolved in acidic solution such as that produced by bacteria in the mouth
What would account for the exothermicity that might occur when ammonium hydroxide is first added to the crude 4-acetamidobenzenesulfonyl chloride
The melting point of the aspirin was found to be 110-115 celsius. Explain why the melting point was low and why the melting range was so wide
Codeine, C18H21NO3, a commonly prescribed painkiller, is a weak base. A saturated aqueous solution contains 1.00 g codeine in 120 mL of solution and has a pH = 9.8. What is the Kb of codeine?
What is the minimum concentration of ammonia that should dissolve AgBr to produce a 0.01 M Ag(NH3)2+ solution
Ethylene glycol is the primary ingredient in antifreeze, has the chemical formula C2H6O2. The radiator fluid used in most cars is a half & half mixture of water and antifreeze (by mass). If Kf=1.86 C/m and Kb=0.512 C/m,
Determine which elements are being oxidized and which elements are being reduced in each reaction
72.0 mL of a 1.40 M solution is diluted to a volume of 278 mL. A 139-mL portion of that solution is diluted using 161 mL of water. What is the final concentration.
The heat energy required to melt 1.00 g of ice at 0°C is 333 J. If one ice cube has a mass of 62.0 g, and a tray contains 16 ice cubes, what quantity of energy is required to melt a tray of ice cubes to form liquid water at 0°C?
how many liters of ethylene glycol ch2ohch2oh should be added to a car radiator that contains a total of 6.5 l of
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln*k versus 1/T (in K) is linear and has a slope of -5355K . Calculate the activation energy for the reaction.
what amount of heat is produced? The specific heat of aluminum is 0.90J/g C?
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