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The Styrofoam cup calorimeter (used in our lab), although agood insulator, absorbs some heat when the system is above roomtemperature. How does this affect the reported ΔHrif a glass container
Why does ceruim nitrate turn clear in the presence of cyclopentanol instead of dark red, brown, or orange like it does with other alcohols?
Calculate the mass of solid sodium acetate required to mix with 100.0mL of 0.1M acetic acid to prepare a pH 4bufferBuffer
A glass bulb weighs 30.00g when evacuated, 130.00g when filled with water at 25oC, and 30.036g when filled with acertain gas at 25oC and 150.0torr pressure. The density of water is 25oC is 0.996g/cm3.
Write a balanced chemical equation, including physical states ofall reactants and products, for each reaction. Then classify the reaction as one of the general types of reactions.
What is the molarity of H2CO3 if 43.33ml of 0.1000M KOH solution is needed to neutralize 20.00 ml of theacid solution?Could someone please show me how to set up this problem.
What is the concentration of the absorbing species in a solution whose absorbance at a certain wavelength is 0.86 OD. Theε = 43 M-1 cm-1.
If the equilibrium concentration of N2 and O2 are 0.28 mol/Land 0.38 mol/L at 2010 K, what is the equilibrium concentration of NO?
A diver exhales a bubble with a volume of 250 mL at apressure of 2.4 atm and a temperature of 15 °C. What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm an
An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. T = 25.0 C The copper electrode is placed in a Cu2+ solution of unknown concentration. The cell p
Mercury, water, and bromine are all liquids at standardtemperature. Their molar entropies are in the sequenceH2O < Hg < Br2. Using molecular properties, explain why bromine is more disordered t
Aluminum (valence=3, FCC) is an excellent metallic conductor. Iron (valence=3, BCC) is a relatively poor metallic conductor. If a small amount of Al is added to pure Fe, will the electri
Determine the amount of Aluminum sulhateAl2(SO4)3 18H2O required perday to process 100 million gallons per day (MGD) containing 20ppmof calcium bicarbonate Ca(HCO3)2.
Write a balanced equation for the reaction of camphor with sodium borohydride. be sure to include any additional reagents required for this reaction. show structures not just formulas.
Write a balanced equation for the reaction of borneol with sodiumhypochlorite. Be sure to include any additional reagents required for this reaction!
What is the molarity of a NaOH solution of 25.00 ml is required to completely neutralize 40.00 mL of a 1.50 M solution of HNO3?
In a lab experiment, 20.00 mL of an aqueous ammonium hydroxide solution is titrated to its equivalence point 15.65 mL of a 0.200 M HCI solution. What is the concentration of the aqueous ammonium hyd
A solution containing Cr3+ is electrolyzed with a current of 3.60 A. How many minutes will ittake to plate out 97.0 percent of the chromium in 0.470 L of a0.0100 M solution of Cr3+?
A solution is prepared by dissolving 0.17 molAcetic Acid and 0.17 mole of ammonium chloride in enough water tomake 1.0 L of solution. What is the concentration of ammonia in the solution?
Standard solutions of calcium ion used to test for water hardnessare prepared by dissolving pure calcium carbonate,CaCO3, in dilute hydrochloric acid.
From a data plot, the ΔH for the dissolution of a salt is+1.03 x 102 kJ/mol and the ΔS is + 311 J/molK. What is the free energy for the dissolution of the salt at 25Celsius?
For this solution calculate the volume required to prepare each of the following diluted solution given 15M NH3, need 2.0 L of 0.4M NH3
A solution containing Pt4+ is electrolyzed with acurrent of 3.60 A. How many minutes will it take to plate out 89.0 percent of the platinum in 0.550 L of a 0.0150 M solution ofPt4+?
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 330 mm Hg and the partial pressure of the oxygen is 1.0 atm, what is the total
How many liters of oxygen reacted at 21 degrees celcius and 101k Pa would be required to produce 1000kJ by this reaction?