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Question- Calculate the freezing point of a solution that contains 30.8 g of urea, CH4N2O (MW = 60.06 g/mol), in 196 g of water. Urea is a nonvolatile nonelectrolyte. Kf for H2O = 1.86°C/m.
Please provide the answer of the given question on urgent basis
Calculate the pH of 9.2E-8 M NaOH, ignoring activity coefficients. Report the pH using the correct number of decimal places.
Calculate the molality of a solution prepared by dissolving 112. grams of copper (II) sulfate in 450. mL of water at 25 oC
Complete the following table for this titration. Data Table P2: Titration of citric acid in orange juice with sodium hydroxide. concentration of OH-: 0.0769 M volume orange juice: 9.40 mL mass orange juice: 9.56 g volume of OH- solution
THe energy of a photon is 4.54 10-19 J. What is the wavelength of the corresponding light
Suppose the burning of magnesium becomes uncontrolled (it burns brightly). How will this procedural error affect the reported mole ratio of oxygen to magnesium in the analysis
waters heat of fusion is 80. and its specific heat is 1.0 . some velomobile seats have been designed to hold ice packs
write a balanced half-reaction for the reduction of sulfate ion so42- to the sulfite ion so32- in acidic solution. how
ferrocene fec5h52s can be prepared by reacting 3.0 g of fecl2s with an equal mass of cyclopentadiene c5h6l and an
Ethane is burned with 20% excess air in a furnace operating at a pressure of 100 kPa. Assume complete combustion occurs.
Consider an infrared grating with 84.0 lines per mm and 15.0 mm of illuminated area. calculate the first-order resolution (λ/Δλ) of this grating. How far apart in cm^-1 must two lines centered at 1200 cm^-1 be if they are to be resolved.
a-By drawing all resonance structures of the carbocation intermediates in the nitration of toluene illustrate explain why alkyl groups are ortho and para directing
Are there any other particular ones more important or can some of them actually have a harmful effect on the human body.
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