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98 g of ethylene glycol (C2H6O2) are dissolved in 715 g of water. The freezing point constant (Kf) of water is 0.81°C·kg/mole. Determine the freezing point of the solution. (°C)
Determine the molecular formula of the oxide of phosphorous when it is in its gaseous state.
The slope of the calibration curve was 18.67 response unit per uM thocyanate. What is the minimum detectable concentration of thiocyanate for this method? And what is the limit of quanititation for thiocyanate by this method
What is delta Suniv for the condensation of a mole of water at 80c if S (standard) of liquid water at 100 c is 87J/mol K and if S (standard) of water vapor at 100C is 197 J/mol K
What is the molar mass when a 12.5855g sample of an unknown compound is dissolved in 32.0000g of water. the resulting solution has a freezing point of -4.3 Kf = 1.858
write the ground state electron configuration( using molecular orbital theory) for o2 and show that it is paramagnetic.
calculate the heat of combustion of ethylene c2h4. the bond energies are c h 416 kjmol c c 356 kjmol c c 598 kjmol o o
explain why you would expect deltah neutzn for hbr reacting with naoh solution and deltah nertzn for hno3 reacting with
triangle symbol h degree 2816kj 6co2g 6h2o l c6h12o6s 6o2 g how is the equilibrium yeld of c6h12o6 affected bya.
The reaction of 50 ml of N2 gas with 150 ml of H2 gas to form ammonia via the equation: n2 + 3 h2-----> 2 NH3...will produce how many ml of ammonia if pressure and temperature are kept constant
Explain the data related to odour in terms of types of bonds. Do you think that a substance can be relatively volatile and not have an odour? Give an example.
Derive the integrated form of the rate laws and the half-life for a.)zero order and b.)second order for the simple reaction: A-->products
The enthalpy of vaporization of water at 373 K and 1 bar is 40.7 kJ/mol and the molar heat capacities are 75.3 J/(mol K) for liquid and 33.6 J/(mol K) for gaseous water. Find the enthalpy of vaporization of water at 273 K and 1 bar.
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