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The half-life of radon-222 is 3.8 days. How much of a 100 g sample is left after 15.2 days?
Suppose that 25 g of each of the following substances is initially at 28.0degrees C. What is the final temperature of each of the following substances upon absorbing 2.35 kJ of heat.
Calculate the mass of oxygen dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air
Provide the newman projections across the C 2 -C 3 bonds for the major conformers after Drawing the zig-zag structures of all the isomers of 2,3-diaminopentane.
The temperature is increased to 45 degree celcius then determine what is the pressure in the cylinder
According to the given data propylamine (CH3CH2CH2NH2) boils at 49 degrees C, Trimethylamine [(CH3)3N] boils at 3 degrees C;trimethylamine has reasonably high solubility in water Propylamine is entirely miscible with water; considering that isobu..
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
Calculate the molar enthalpy of combustion of Phosphorous when this combustion process was carried out under the constant pressure?
Which corresponds to approximately 2.65 * 104 mol of electrons at the voltage of a fuel cell and calculate how much heat energy is absorbed?
Bonding in some solids does not fit neatly into one of the four categories. Explain why the bonding in Na2CO3 is not purely ionic.
NaCl(aq) + H2O(l) → NaOH(aq) + Cl2(g) + H2(g). If the brine contains 389 g of NaCl, how much Cl2 can be produced.
What volume of 0.25 M HCl solutions must be diluted to prepare 1.00 LK of 0.040 M HCl?
Calculate brightness of a wavelength undergoing Rayleigh scattering.
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