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what is the formula of alcoholic acidity?
How much thermal energy transfer is required to vaporize 1.0 metric tone of ammonia?(1 metric ton = 10^3Kg). The delta H vaporization for ammonia is 25.1KJ/mol.
a 500 ml gas sample is collected over water at a pressure of 740 mmhg and 25 celsius. what is the volume of the dry gas
A weather balloon has a maximum volume of 7.50 × 103 L. The balloon contains 195 L of helium gas at a pressure of 0.993 atm. What will be the pressure when the balloon is at maximum volume?
in most cases the solid substance on the tlc plate called the stationary phase is quite polar. often it is sio2 called
By mass spectral analysis, a sample of strontium is known to contain 2.64x1010 atoms of Sr-90 as the only radioactive element. The absolute disintegration rate of this sample is measured as 1238 disintegrations per minute. Calculate the half-life ..
What is the osmotic pressure associated with a 0.0200 M aqueous solution of a nonvolatile nonelectrolyte solute at 75C
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added). The Ka for HOCl is 3.0 x 10-8 M.
What compound could be added to a 0.10 M KC2H3O2 solution to make it an effective buffer. Also, write a balanced chemical reaction for the addition
Calculate the work done on or by a system that absorbs 260 kj of heat experiences a change in internal energy of 157 kj. Does the system expand or contract? How do you know?
Which of the following statements concerning fatty acids is incorrect. Fatty acids are rarely found free in nature
in a laboratory practical exam students were asked to prepare an aqueous buffer solution having a ph close to 9. which
A researcher wants to find the percentage of likely voters in a given state who will vote "yes" on an upcoming statewide ballot referendum. The population of the state is 3 million, and there are about 1.8 million likely voters. What population is..
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