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Describe the effect that a second or third pair of shared electrons between two atoms (double or triple bonds) might have on the shape of the molecule.
The flask was filled to the calibration mark with water, and the contents were thoroughly mixed. What were the equilibrium concentrations of H+, Na+, H2PO-4 , and HPO-2 in the resultant solution? Ka1 = 7.1x10-3, Ka2 = 6.3x10-8, and Ka3 = 4.2x10-13..
With aqueous H2CrO4, compound A was oxidized to an optically inactive dicarboxylic acid C, C6H10O4. Give structures for compounds A, B, and C; do not specify stereochemistry
To make 1.50 L of 0.100 M NaCl from a 3.13 M stock solution,you would need to take ( blank) mL of the stock solution and add (blank) mL of water
draw the structure of p-aminobenzoic, and show all importnant resonance structures for this molecule
An X-ray photon of wavelength 0.976 strikes a surface. The emitted electron has a kinetic energy of 958 eV. What is the binding energy of the electron in?
a compound is 40.0c 6.70h and 53.3o by mass. assume that we have a 100.g sample of this compound. what are the
Problem- A weather balloon with a volume of 200.0 L is launched at 20oC and 1.06 atm. The balloon rises to an altitude of 20,000 meters, where the pressure is 63 torr and the temperature is -63oC? What is the new volume of the balloon at that alti..
Calculate the dissociation constant of NH4OH(aq) if the degree of dissociation of 0.006 mol/kg solution is 0.053 and the activity coefficients of all species eq
Write the balanced molecular equation, the total ionic equation, and the net ionic equation
Concentrated hydrochloric acid is 37.5%HCl by mass and has a density of 1.205g*cm^-3. Define what volume (in Ml) of concentrated hydrochloric acid must be used to prepare 10.0l of0.7436m HCL(aq)
A 81 L sample of dry air cools from 145C to -22C while the pressure is maintained at 2.85 atm. What is the final volume?
Calculate the enthalpy change of the reaction for per mole potassium carbonate. Assume the specific heat of all solutions are 4.18 J/g°C and all solutions have a density=1.0 g/ml (A:-13.3 KJ) show all calculations please
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