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A solution is prepared that contains 7.050 g of HNO2 in 1.000 kg of water. Its freezing point is found to be -0.2929 degrees C. Calculate the actual van't hoft factor for this mixture. About how much of the HNO2 is dissociated and explain how you know this, based on the calculated value of i.
What is the pH at the point in a titration at which 20ml of 1.0M KOH has been added to 25ml of 1.0M HBr
Draw the Major Organic Products that will form when (E)-3-methyl-3-hexene reacts with ozone
A sealed flask contains 0.45g of water at 28 °C. The vapor pressure of water at this temperature is 28.36 mmHg. What is the minimum volume of the flask in order that no liquid water be present in the flask?
exhibits Kc = 0.0302 at 342 K. If the standard enthalpy change for this reaction is 10.0 kJ/mol, what is the value of Kc for the following reaction
The sedimentation coefficient of a certain DNA in 1M NaCl at 20C was measured by boundary sedimentation at 24,630 rpm. The following data were recorded:
ammonium carbonate decomposes upon heating according to the following balanced equation nh42co3-gt2nh3co2h2o. calculate
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
The silver chloride is virtually insoluble in water. In a titration, how many mL of 1.00M NaCl must be added to 25.0 mL of a 0.366M AgNO3 solution to completely participate the silver
Calculate the mass of butane needed to produce 89.8g of carbon dioxide. express the mass of butane numerically
How many grams of sodium carbonate is formed from the reaction of 74.0g of sodium hydroxide and 44.0g CO2. How many grams of each material is present after the reaction
The solubility-product constant for Ce(IO3)3 is 3.2e-10. What is the concentration in a solution prepared by mixing 50 mL of O.0250 M Ce with 50 mL of 0.040 M IO3? Back of book has 7.0e-3 M
what are the molar concentrations for Na+, Cl-, OH- in the resulting solution? Assume a total volume of 100 mL.
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