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How many grams of NaBr must be added to 250g of water to lower the vapor pressure by 1.30 mmhg at 40 degrees celcius assuming complete dissociation? The vapor pressure of water at 40 degrees celcius is 55.3mmHg
What was the rate of production of 24Na in a 30-m reactor irradiation of 23Na if the activity of 24Na was found to be 1.0 mCi 3 h after the end of irradiation
Hydrogen atoms that are bonded to an sp3 hybridized carbon atom normally appear between 0.9 - 1.8 ppm and are said to be shielded. What would cause the hydrogen atoms bonded to an sp3 hybridized carbon atom to be deshielded and appear downfield
What is the total sample size (in grams) for a sample of magensium nitrite which contains 0.96 g of oxygen
Why don't you see the effect of rotation on the vibrational frequencies of chromophores in a polyatomic molecule in the liquid phase
If 30.0 L of oxygen gas is cooled from 473 K to 274 K at constant pressure, what is the new volume of oxygen
A disinfectant states that it will kill 99.9% of bacteria if left on for 45 minutes. What percentage of bacteria are killed if the disinfectant is left on only for 5 minutes
What are the subscripts in the empirical formula of this compound?
if 18ml of oxygen are collected over water at 27 degrees celcius and 740 mm hg of pressure what volume will the dry gas
An atmospheric chemist studying the pollutant SO2, places a mixture of SO2 and O2 in a 2.00 L container at 800k and 1.90 atm. when the reaction occurs, gaseous SO3 forms, and the pressure falls to 1.65 atm
what is the solubility of helium in water at 30 ordmc if its partial pressure above the solution is 350 torr? the
In muscles during strenuous exercise, under anaerobic conditions lactic acid builds up due to the following reaction. The carbon atom indicated by the asterisk is (a) chiral (b) prochiral (c) achiral (d) both achiral and prochiral
A 5.325g sample of methyl benzoate, a compound found in perfumes, was found to contain 3.758g of carbon, 0.316g of hydrogen, and 1.1251g of oxygen.
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