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For NH3 gas the standard enthalpy of formation Hf= -46 kJ/mol. Compute the heat of reaction when 1 mol of hydrogen gas reacts with excess nitrogen gas to produce NH3 at 298K and constant pressure 1 atm.
calculate the amount of heat evolved in the complete oxidation of 8.17 g of al at 25oc and 1 bar pressure. the standard
What does the angular momentum quantum number determine? Check all that apply. A.) the overall size of an orbital B.) the energy of the electron on the outer shell C.) the possible number of electrons on particular orbital D.) the energy of an orb..
Explain why does the conductivity in semiconductors increases with increasing temperature while the conductivity of metals decreases
Using the following data, calculate the V/T ratios and determine if Charles'Law is obeyed (verified). Volume hot dry air - 137.0 ml Volume water drawn into flask - 32.0 ml Temp. boiling water - 99.5 oC Temp.
Calculating concentration of an ion, Given the concentration of hydroxide ions, use the ion product constant of water to calculate the concentration of the other ion at 298 K
If the heated copper is then placed into the water in the insulated container, given that the specific heat of copper is 0.385J/(gC), calculate the maximum temperature of the water after the copper metal is added.
For a certain reaction a change in standard H= -75.6kj also change in standard S= -214 J/K. If n = 2, Compute standard E cell for the reaction at 25 degrees C
Calculate the molar heat of neutralization (in kJ mol-1). The heat capacity of the calorimeter is 10 cal/g·0C.
A United Nations toxicologist studying the properties of mustard gas, S(CH2CH2Cl)2, a blistering agent used in warfare, prepares a mixture
Arrange the following substances in order of increasing strength of intermolecular forces: H2O, He, I2, and N2.
a 0.0050 molar solution of sugar is separated from pure water by a membrane at 20c. what is the osmotic
a 100 ml volume of a 0.100 m weak base pkbnbsp 5.00 was titrated with 1.00 m hclo4. find the ph at the following
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