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170 mL of an HCl solution with pH of 2.30 is added to 200 mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution?
The weight of the purified caffeine is often much lower than the weight of the crude caffeine. Explain the reason why.
The volume of a sample of Cl2 is 5.62 L at 740 torr and 33 degrees celsius. What volume will the Cl2 occupy at 107 degrees celsius and 680 torr ?
Draw the Lewis structures and determine which of these molecules has a central atom that violates the octet rule. Please note that NO3 has an odd number of electrons. But you must decide where the missing electron will be. Does the central atom vi..
a meteorological ballon contains 250.0l he at 22 degrees celsius and 740.0mm hg. if the volume of the ballon can vary
What is the lowest possible energy (in electron volts) of an electron in hydrogen if its orbital angular momentum is 2?
Name and provide the structure of the major organic product which results when (R)-3,3-dimethyl-2-butanol is heated in the presence of HBr.
When 1.0 g of gasoline burns, 11500 calories of energy are given off. If the density of gasoline is 0.74 g/mL, how many kilocalories of energy are obtained from 1.1 gallons of gasoline?
Use simple structure and bonding models to account for why phosphorus forms 2 chlorides (PCl3 and PCl5) while nitrogen forms only 1 chloride (NCl3).
Assume that the liquid is an ideal solution and apply Raoult's law to find the following. What is the temperature of the liquid
How much heat is absorbed by a copper penny with mass 3.10 g whose temperature rises from -8.0*C to 37.0*C
sodium-24 is a radioistope with half life of 15 hours. A sample of pure sodium-24 has an inital mass of 400.0 g. what mass of sodium-24 remains after 60 hours?
Draw the structures of [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2. Explain the difference between the chlorides in [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2
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