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Determine how many photons having a wave length, λ, of 3.00 mm would have to be absorbed to heat 150. ml of water (~ 1 tea cup) from 55.0 °F to boiling (212°F)?
Extracting twice with two 25mL aliquots of a solvent is more effective than extracting once with50mL. Prove this by using an example, where the solubility of compound X is the same in water as it is
Determine the volume of NaOH solution expected assuming that the NaOH concentration is ~0.1 M suppose when you dissolve the 0.34 g of KHP in 20mL of water and titrate with the NaOH solution.
A rock was recently discovered near the Arctic Circle which was found to contain 1.0103nanograms (ng) of 206Pb and 5.5732 ng of238U.
Determine the binding energy for Cf-253 if one atom of this nuclide has an atomic mass of253.06920. Cf-253 decays primarily by beta emission to yield Es-253. This process has a half-life of 17.81 da
Determine the number of neutrons in the nucleus of the resultant nuclide of Y when a nuclear reaction involves the hypothetical element X, which has an atomic number of 168, as a reactant.
Explain how much energy is released when one mole of deuterium is fused with one mole of tritium according to the above reaction? The masses of the atoms and the neutrons are:
If all the H2O (g) in the atmosphere (assume it is 2% by volume) suddenly condensed to H2O(l),and all the enthalpy of this process was captured and converted to electrical energy, explain how l
How can compare this distance to the molecular diameter of the molecule measured by the van der walls coefficient, b. For N2, a=1.370 bar L^2 mol^-2, and b = 3.87*10^-2 L mol^-1
Illustrate the straight chain fisher projection of this molecule. classify this sugar as reducing agent or non-reducing. Write down an equation for its reaction with tollens reagent
How many milliliters of 3.550M H I (aq) must be added to a solution containing .700 mol of Pb(NO3)2(aq) to completely precipice the lead. Lead iodide is virtually insoluble in water so that the reac
Determine how many grams of gas are present in a sample the has a mol as mass of 70.0 g/mol and occupies a 2.00L container at 117 kPa and 35.1c?
Determine the mass of the propane in the flask if a 2.00L flask is filled with propane ga (C3H8) at 1.00 atm and -15.0c.
Identify the molar mass of the gas measured at the following conditions, 1.05g occupying 2.35L at 37c and 638.4mmHg
Discuss the arrangement of the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n=3 electron shell: K, Mg, P, Rh, and Ti.
Identify the bond order of CH. Would you predict the molecule to stretch or shrink upon (1) ionization, (2) electron attachment, and in each case briefly explain why.
Silver chloride, AgCl, is a sparingly soluble solid. Answer the following questions about a saturated solution prepared by placing the solid silver chloride in a 1.00e-5 M NaCl (aq) solution.
Determine the molar mass of the acid if 25.0mL of this solution required 11.1 mL of 1.00M of KOH for neutralization. A 5.00g quantity of a dipodic acid was dissolved in water and made up to exactly
Benzoic acid and Phenol are both weak acids that are insoluble in diethyl ether and insoluble in water. Phenol is soluble only in the stronger base, 10% NaOH. Benzoic acid is soluble in both 10% NaO
What is the pH of a neutral aqueous solution at 50 degrees Celsius when the value of K_w for water at 50 degrees Celsius is 5.48e-14 M^2.
What is the value of Kb for the equilibrium when the pOH of a 0.25 M aqueous solution of an unknown weak base, which we will designate BOH, is 3.10 at 25 degrees Celsius.
What was the pressure in the gs tank during the summer when a gas at 4.5 atm pressure was stored in a tank during the winter at 10c. During the summer temp storage area reached 42.0 c.
Provide the list of all the equipment that is necessary to set up a vacuum filtration. Determine the purpose of a trap in a vacuum filtration set up?
Determien the molality of an aqueous solution of a non electrolyte if the freezing point of the solution is -7.8 degrees C and the freezing point of pure water under the conditions of the e
A solution is prepared in 125.814 g of the solvent cyclohexane by dissolving the 9.823g of an unknown compound. The molality of the solution is determined to be 0.505 m by freezing point depression