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Determine the precipitate that forms when the aqueous lead (II) nitrate reacts with aqueous sodium sulfate? Explain in detail.
D value is used to determine the time for thermal inactivation of a given organism population under specific sterilization condition in thermal sterilization.
Polonium-210 decays to Pb-206 by the alpha emission. It has the half-life 138 days. Determine what volume of helium at 25 degrees Celsius and 1.2 atm would be obtained from a 25.00 g sample of Po-2
Suppose the density of the water is 1.00 x103 kg/m3 and the air above is at a pressure of 101.3 kPa. Determine the absolute pressure at the bottom of a freshwater lake at a depth of 2
Determine the activity coefficient of H+ in a solution which is having the 0.010 M HCL plus 0.040 M KClO4.What is the pH of the solution?
As the two gases diffuse down the tube, a white ring of NH4X produces 86.3 cm from the ammonia flask. Find out the element X. A flask of ammonia is connected to a flask of an unknown acid HX by a 1.
Determine the oxidation state and the d electron count the number of d electrons for the metal ion in the following coordination complex? [PtCl4]Cl2
Determine what will be the pH change when the 20.0 mL of 0.100 M NaOH is added to80.0 mL of a buffer solution which is having of 0.183 M NH4Cl and 0.169 M NH3?
Determine the energies of the nuclear spin states of the proton in a magnetic field of 12.00 T. proceed to find out the populations of each of the nuclear spin states at the 12.00 T and an extremel
If the population in the excited level is 1.126 times the population in the ground level, analyze the temperature when a molecule has two electronic states, a doubly-degenerate ground state and an
Estimate the vibration partition function at 3000 K when a molecule has three normal modes with the wave numbers of 1400cm-1, 2500 cm-1, 3500 cm-1.
How can obtain an expression for the maximum work the gas can do in the expansion if n moles of the gas undergo is other male expansion at the temperature T from an initial volume V1
Analyze the amount of heat evolved in the complete oxidation of 6.44 g of Al at 25 degrees Celsius and the 1 atm pressure. (<Hf^0for Al2O3 is - 1676 kj/mol).
Determine the numbers of valence electrons does an atom of barium have when an nitrogen atom loses its valence electrons, and the charge on the resulting ion is ___.
For each bond to an H atom, decide whether it is polar or nonpolar when the hypo phosphorous acid, H3PO2, has the structure (HO)PH2O, in which two atoms are bonded to an O atom.
Determine the maximum percentage yield of the ketene CH2CO obtainable at this temperature?At 1189 K the gas phase decomposition of the acetic acid proceeds by the way of two parallel reactions:
A pharmacist is preparing 1.000L of an aqueous is opropylalcohol solution that is having 37.5% (v/v) isopropyl alcohol in the water. Determine the numbers of mL of isopropyl alcohol must she calcula
Estimate the concentration of the compound when a solution of 4-methyl-3-penten-2-one in ethanol gives an absorbance of the 0.52 at 236 nm in a cell with a 1 cm light path. Its molar absorp
Determine the numbers of grams of glucose (C6H6O6) should be dissolved in the 1 liter of water to make a 0.5000 molar solution of glucose in the water?
To give the sulfur trioxide the sulfur dioxide is oxidized by oxygen. Suppose you have 100.0 g of SO2, 50.0 g ofO2, and after carrying out the reaction you got the 120.0 g of SO3.
In dry cleaning a liquid compound used which contains the 85.5% Cl and 14.5% C by mass and has a molecular weight of the 166 amu. Write down the Lewis formula for the molecule and tell the molecula
Calculate whether the molecule is polar, find out the hybridization of all interior atoms, and make a sketch of the molecule, according to valence bond theory, showing orbital overlap.
The balloon is placed in liquid nitrogen until its temperature reaches -142 degrees Celsius. A balloon is filled with N_2_ gas to a volume of 1.92 L at 37degrees Celsius. Assuming the pressure rema
Estimate the wavelength of the line in the emission spectrum of He+ formed by an electron transition from n=5 ton=2. By using the modified Balmer equation:
Determine what spontaneous reaction will occur in the aqueous solution among then ions Ce4+ ,Ce3+, Fe3+, and Fe2+ under standard-state conditions?