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2NH3 (g)+ CO2 (g)----NH2CONH2(aq) H2O(l)
Urea (NH2CONH2) an important nitrogen fertilizer is produced industrially by the reaction given that ?G initial = -13.6KJ, calculate ?G at 298K for the following sets of conditions
1) 20atm NH3, 20atm CO2, 5.0 M NH2CONH2 delta G=?
2) 5.0x10^-2 atm NH3, 5.0x10^-2 atm CO2, 1.0M NH2CONH2 G=?
26.0cm of a solution containinh 1.86g of X2CO3 in 250 reacted completely with 27.0cm of solution contain 3.65g of HCL per dm,calculate the molar mass of X2CO3 and relative atomic mass of X, and identify X.
an unknown monoprotic acid is titrated with 38.10mL of 0.265 M NaOH. Calculate the molar mass of the acid.
Draw a flame ionization detector FID using the following parts: column, flame, hydrogen, air, electrode, current meter
What should be the concentration of the NaCl solution (in g/L) so that it will have the same osmotic pressure as the blood at 37 deg C
if the molarity of the HCl solution was actually greater then the lable indicated would it affect the calculated value for the number of moles of HCl that reacted.
One of the chair conformations of cis-1,3-dimethylcyclohexane is more stable than the other by 23.1 kJ/mol. Use this to estimate the energy cost of a 1,3-diaxial interaction between two methyl groups
Assuming the mixture has the same specific heat (4.184J/goC) and density (1.00 g/cm3) as water, calculate the heat (in J) transferred to the surroundings
The mass spectrum of an organic compound shows the relative abundance of M to be 34.29% and M+1 to be 8.901%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundance: 12C is 98..
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation).
Why are chromatographic peaks broader than would be expected solely on the basis of the random nature of solute migration
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse
Draw the Newman projection of all staggered and eclipsed conformations around the C3-C4 bond of hexane (CH3CH2CH2CH2CH2CH3).
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