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Assume that the solutes used in a "Determination of a Molar Mass by Freezing Point Depression" experiment are soluble in both water and cyclohexane. Why, then, was cyclohexane used as the solvent?
calculate the molar mass of an unknown compound based on the following data. a mixture containing 1.11g of the unknown
Problem- A 25ml sample of .15M hydrazoic acid is titrated with .15M of NaOH solution. What is the pH at the equivalence point. Ka of hydrazoic acid is 4.5*10-4.
What are the fundamental differential equations for the energy properties. List the canonical variable for U, H, A and G and what is ‘entrance work' in flow system
calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of 0.0500 M HCl.
We do not have a reliable method for determining the number of molar equivalents of bleach being added because commercial preparations vary in concentration and "oxidizing power
Suppose we start with 0.0530 mol of N2O5 in a volume of 5.2 L. How many minutes will it take for the quantity of N2O5 to drop to 0.0253 mol?
The resultant mixture is then evaporated in a kettle to produce a jam contain- ing 67 wt % soluble solids
What is the pH of a solution containing 4.555 g of potassium sorbate, KC6H7O2 , KSORB, MM = 150.21 g/mol, in 0.750L of solution?
3 tons of ethanol are accidentally discharged into a lake. By how much is the biological oxygen demand of this water increased? Assume that all ethanol is transformed into CO2 and assume the lake contains 108 liters of water.
The mass spectrum of an organic compound shows the relative abundances of M to be 67.98% and M 1 to be 15.44%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound.
the second-order reaction 2 mnco5 mn2co10 has a rate constant equal to 3.0 x 109 m-1 s-1 at 25degc. if the initial
how does an acidic buffer solution reacts when we add strong acid or base to it? and what are the diffrences in the
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