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Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4 of mass 20.0 mg.
A syringe filled with air can be used to test the relationship between the temperature and the volume of a sample of gas. The syringe has a movable plunger that allows an enclosed sample of gas to be held at a constant external pressure, so the ga..
Which of the following represents the energy that is not available in a system to do work at a particular temperature
What is the mass (in kg) of helium if it filled a square room if the room has walls that are 9.5 feet high and 9.5 long and the density of helium is 0.18 g/L
what is the condensed structural formula for the product of the hydrogenation of 2-butene using a platinum catalyst
Why or Why not and provide cathode-anode half reactions? How fast is the corrosion occurring?Do we have enough information to answer this question? If not, what additional information is needed?
Calculate the pH of the solution that results when 20.0 mL of 0.200 M formic acid is mixed with 25.0ml of 0.200 sodium formate solution
Calculate the total number of ions in a single crystal of epsomite. Assume a crystal is cube?
Each of four compounds shown has one signal in the aromatic region and one signal in the alkyl region of its H NMR spectrum. Use the integral values to determine which compound's H NMR spectrum is shown below
A chemist needs to determine the concentration of a solution of nitric acid, HNO_3. She puts 865 mL of the acid in a flask along with a few drops of indicator
how many valence electrons do each of the following elements have, and what are the specific valence electrons for each element
what is the enthalpy change when 40.1 mL of 0.400 M sulfuric acid reacts with 19.5 mL of 0.133 M potassium hydroxide? H2SO4(aq)+2KOH(aq)->K2SO4(aq)+2H2O(L)
what the volume of 0.109m HNO3 that is required to reat completely with 2.5g Barium hydroxide
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