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If 6.40 multiplied by 10-9 mol of 176W emits 1.07 multiplied by 1015 positrons in 1.00 h, what is the decay constant?
ethylene glycol hoch2ch2oh is effective as an antifreeze but it also raises the boiling temperature of automobile
Use the thermodynamic data in Appendix B to calculate the standard cell potential and the equilibrium constant at 25 for the cell reaction in a direct methanol fuel cell
In the study of a second order gas phase reaction, it was found that the molar concentration fell from 200 mmol L-1 to 80 mmol L-1 in 1.20x104 seconds. What is the rate constant of the reaction
Estimate the vapor pressure of water a solution containing 30 g of glucose per 500 g of water at 25C, given that the vapor pressure of pure water is 2.338 KPa at the same temperature.
find the theoretical percent yield amp percent error of the reaction.zirconium oxalate k2zrc2o43h2c2o4middoth2o was
CaCN2 + 3 H2O → CaCO3 + 2 NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
although not a transition element, lead can form two cations: Pb2+ and Pb4+. write the formulas for the compounds of these ions with the chloride ion.
One mole of a monatomic ideal has at a temp of 500K and 6atm pressure is subjected to the following changes: (all are reversible changes)
What mass of oxygen would be required to convert the same sample of nitrogen to nitrogen dioxide (NO2) instead?
Calculate the energy in joules of a 7.46 g object moving at a speed of 713 m/s. Enter in Scientific notation. Also determine how much greater the electrostatic energy is between charges
What is the freezing point (C) of a solution prepared by dissolving 15.3 g of Ca(NO3)2 (formula weight=164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86 C/m.
compute the atomic packing factor for the diamond cubic crystal structure shown in the figure below. assume that
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