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What is the value of q when 7.12g of water vaporizes at 373oK? The enthalpy of condensation of water at 373oK is -40.7KJ/mol.
What is the density of lead (in ) if a rectangular bar measuring 0.500 in height, 1.55 in width, and 25.00 in length has a mass of 220.9 ?
when burned in oxygen, yielded a mixture of CO2 and SO2 in which the number of moles of CO2 was one-half the number of moles of the SO2. How many grams of C contained in the mixture?
The pressure of 9.0 L of an ideal gas in a flexible container is decreased to one-sixth of its original pressure, and its absolute temperature is decreased to one-half of the original. What is the final volume of the gas
Does a reaction with a delta H of 14kj/mol and a delta S of 150 J/molK at 298K favor reactants or products
If the tank was actually pressurized such that the top surface of milk was at a pressure of 123.0 kPa, what was the actual height of milk in the tank?
starting from alcohol that contains four or less carbon atoms and from benzene and toluene,
As a technician in a large pharmaceutical research firm, you need to produce 150.mL of a 1.00 M phosphate buffer solution of pH = 7.10. The pKa of H2PO4- is 7.21.
a sodium thiosulfate na2s2o3 solution has a concentration of 0.175 m. an end point for this titration occurs when 48.94
what is the final concentration of NaOH when 50.0 mL of .200 M NaOH is added to 50.0 mL of 0.500 M NaOH?
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
Describe in brief the risk connected with solutions of 1M NH 3 , 1M HCl, and 1M NaOH?
the forensic technician at a crime scene has just prepared a luminol stock solution by adding 11.0 of luminol to creating a solution with a total volume of 75.0 . What is the molarity of the stock solution of luminol?
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