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What is the theoretical yield of aspirin in an experiment if you start with 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08 g/mL)
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below.
the Brackett series of hydrogen has a wavelength of 2626 nm. From what state did the electron originate
The solubility product constant (Ksp) for the dissolution of SrSO4 as represented by the chemical equation is 2.5 x 10-7.
A student is required to generate 90.0 mL of carbon dioxide at 750 mm Hg and 21C using potassium hydrogen carbonate and HCl. What is the mass of the potassium hydrogen carbonate needed?
HCN is a weak acid dissolved in water. (Ka=6.2x10^-10). If a 50.0mL sample of 0.100 M HCL is titrated with 0.100 M NaOH 1) what is the pH at the equivalence point
Acid Mixture Problem, From a full 50-liter container of a 40% concentration of acid, x liters is removed and replaced with a 100% acid.
what is the total volume occupied by the metal and the water in the graduated cylinder? 2.How could the density of a substance that was soluble in water, be determined?
Is the melting of wax a physical or chemical change? from the mass measurement only,( the mass of the candle at 0 minute is 10.1g, after 30 minutes is 7.4g) how could a chemical also be proved to have occured in the burning of candle.
What is the voltage output of the half -cell at the pt electrode that you made out of a saturated solution of ca(IO3)2 (s) if the E0 for IO3-/I- is 0.26v in a solution
If 27mL of 6.0 M sulfuric acid was spilled, what is the minimum mass of sodium bicarbonate that must be added to the spill to neutralize the acid?
What is the wavelength of an electron (mass= 9.11 x 10^-31 kg) moving with a velocity
consider the reaction CO2+H2=CO+H2O.The equilibrium concentrations are [CO]= 0.050M, [H2]=0.045M, [CO2]=0.086M, and [H2O]= 0.040M. Calculate K .
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