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Assume 846 mg of a pure diprotic acid, this means that the acid is capable of donating two hydrogen ions or protons was titrated with 12.32 mL of a 0.684 M potassium hydroxide solution. Define the molar mass of the acid and the balanced equation is-
H2X + 2KOH --> K2X + 2HOH
What is the molar composition of the vapor in equilibrium with a boiling liquid that has a composition of 60% A and 40% B
Explain how to draw NMR structures for compounds that meet these descriptions: a. C2H60; one singlet b. C3H7Cl; one doublet and one septet c. C4H8Cl20; two triplets d. C4H8O2; one singlet, one triplet, and one quartet Any help would be greatly app..
A solution is made by combining 500ml of .10M HF with 300ml of .15M NaF. What is the pH of the solution? (Ka=7.2e-4 for HF)
For the following reaction if the rate of disappearance of O2 is 0.0450 mol L-1s-1, what is the rate of formation N2O5(g)?
a 4.22g sample of cus was added to excess hcl and the resulting h2s was collected over water. what volume of h2s was
graduated cylinder contains 155 of water. A 19.0 piece of iron (density = 7.86 ) and a 18.0 piece of lead are added. What is the new water level in the cylinder?
Determine the ionic strength. Assume that all the salts completely dissolve and dissociates into their respective ions
how much heat in is evolved in converting 1.00 of steam at 155.0 to ice at -55.0? the heat capacity of steam is 2.01
a 200 gram sample of a large biomolecule was dissolved in 15 grams of carbon tetrachloride. the boiling point of this solution was determined to be 77.85 degees celcius. calculate the molar mass of the biomolecule.
What is the change in energy for a constant pressure process where H = 23 J and 11 J of work are performed on the system? Hint: What is enthalpy equal to when pressure is constant
What is delta H rxn/mol Mg for the following reaction. Mg + 2HCl -> MgCl2 + H2 if 0.158 g Mg reacts in 100.0 mL of solution and changes the temperature from 25.6 °C to 32.8 °C
as the sample coolsmoisture from the atmosphere condense on the outside oftheevaporating dish before the mass is
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