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An aqueous NaCl solutions is made using 112 g of NaCl diluted to a total solution volume of 1.0 L. Calculate the molarity, molality and mass percent of the solution? ( Assume density 1.08 g/ml for the solution)
She weighed an empty 4.3 L bulb, then filled it with the gas at 1.60atm and 23.0 C and weighed it again. The difference in mass was 7.9g . Identify the gas.
If 18.8 of 0.800 solution are needed to neutralize 5.00 of a household ammonia solution, what is the molar concentration of the ammonia
Determine the vapor pressure lowering, at 27 Celsius, of a solution of 75.0 grams of sucrose, C12H22O11, dissolved in 180 grams of water. the vapor pressure of pure water at 27 celsius is 26.7 torr. assume the solution is ideal.
determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
compute the hydroxide ion concentration in a nh3 solution that is 0.091 m and 0.028 m nh4cl. kb of nh3 is 1.8 x
What reagent is used to keep the above separation in a weakly basic condition. Why is this necessary
A chemical reaction is run in which 463 Joules of work is done by the system and the internal energy changes by -1027 Joules. Calculate the amount of heat transferred.
Determine the extent of reaction and amounts of B & Z and A reaction having time independent stoichiometry follows the equation
An automobile gasoline tank holds 36 kg of gasoline. When the gasoline burns, 95 kg of oxygen is consumed, and carbon dioxide and water are produced.
calculate an approximate heat of reaction for the combustion of one mole of methane gas ch4 to form gaseous h2o and
Consider a reaction for which DeltaS is positive and DeltaH is negative. Discuss briefly the conditions under which this reaction will NOT BE spontaneous.
A line in the Balmer series of hydrogen has a wavelength of 434 nm. From what state did the electron originate? Ni=? In what region of the electromagnetic spectrum is this line observed?
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