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concentrated sulfuric acid (18.3M) has a density of 1.84g/mL. how many moles of sulfuric acid are present per mL of solution
The solubility of AgCl(s) in water at 25 degrees celsius is 1.33x10^-5 mol/L and its change in enthalpy of solution is 65.7 kJ/mol
for the diatomic molecule f-br the following values are knownallen-scale electronegativities f 4.193 br 2.685bond
which ions in water make it 'hard'? is it possible to test for only one of these ions quantitatively in the presence of the other.
a solution is made by dissolving 26.42g of nh42so4 in enough h2o to make 50.00ml of solution.a. what is the molar mass
to obtain the same antifreeze protection requires 76 of propylene glycol to replace each 62 of ethylene glycol.
Make a flow chart on how a mixture of phenol, benzoic acid, p-nitroaniline and anthracene can be seperated by extraction
Suppose a piece of silver jewlery contains 5.00 * 10^22 of silver. how many dozens of silver atoms are in the piece of jewlery.
a chemist started to carry out column chromatography on afriday afternoon reached the point at which the two
When the metal was placed in a constant-pressure calorimeter containing 30.0g of water, the temperature of the water rose from 24.46C to 29.26C. Calculate the specific heat of the metal in J/g C.
A titration is performed by adding 0.400 M KOH to 40.0 mL of 0.300 M HCl. What is the pH after addition of 20.0 mL of the base
The rate of a chemical reaction is found to double when the temperature is raised from 298K to 308K. Determine the activation energy.
A helium-filled weather balloon has a volume of 714 L at 23 oC and 750 mmHg. It is released and rises to an altitude of 3.78 km, where the pressure is 546 mm Hg and the temperature is -2oC. The volume of the balloon at this altitude is
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