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Explain the pH of a solution made by adding 8.80 grams of ammonium chloride to 450mL of 0.105M sodium hydroxide. No change in volume takes place
will strontium sulfate form a precipitate at 25 degrees celcius when 345mL of a solution that is .0100M in Sr+2(aq) is added to 75mL of a .175M SrSO4
what is the literature value for the Ksp of potassium hydrogen tartrate in water at 10, 22.5, 35, 50 degrees?
In the lab using conc. HCL and heat, if the solubities of reactant and product were reversed , how would the isomerization be followed. How would one knows when it is complete
A student completes a titration of an unknown diprotic acid. In this experiment, 0.79 g of the acid is dissolved in 250.0 mL of water. It requires 13.48 mL of 1.0 M NaOH to reach the second equivalence point. What is the molar mass of the acid
How many grams of lead will be deposited at the cathode from a solution of Pb2+ ions by a 0.15 ampere current flowing for 1.00 hour.
A sample of a new compound is burned in an excess of air to produced CO2 and H2O. If 0.468 g of the sample produce 0.458 g of CO2 and 0.094 g of H2O and the molar mass is about 230, what is the likely molecular formula of this compound?
calculate the number of sugar residues per second that must be added enzymatically to growing cellulose chains to account for this rate. Each D-glucose unit contributes ~0.5 nm to the length of a cellulose molecule.
A compund with a formula mass of 42.08 amu is found to be 85.64% carbon and 14.36% hydrogen by mass. find its molecular formula. I did this problem and got c2h for the epirical formula then for the molecular formula i got c4h2 but im not sure that..
A 520.0 mL of a buffer solution that is 0.175 M in HC2H3O2 and 0.165 M in NaC2H3O2, Calculate the inital pH and the final pH after adding 0.020 mol of HCl
Papaverine hydrochloride (C20H21NO4HCl) is a weak acid. It is used in medicine as a muscle relaxant. A 0.205 M solution of papaverine hydrochloride has a pH = 3.31. Find the Ka of papaverine hydrochloride.
1 the four common isotopes of sulfur have atomic masses of 32 33 34 and 35 amu respectively. draw valence diagrams of
We know Pro can interrupt an a-helix, chemically, do you think it will cause any unusual problems in the determination of, angiotension II sequences? Explain.
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