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What is the molarity of a sodium chloride solution
Aluminium (atomic mass 26.98 g/mol) crystallizes in a face-centered cubic unit cell. In addition, aluminium has an atomic radius of 143 pm. What is the density of aluminium?
At a given temperature, the equilibrium constant K for the reaction 2SO2(g) + O2(g) 2SO3(g) is 3.0 × 109. If 2.80 mol of SO2 and 4.06 mol of O2 are placed in a 1.78-L container.
What is the specific heat for the metal if It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13. Degree Celsius to 24.3 degree celsius?
A piece of metal of mass 18 g at 117 C is placed in a calorimeter containing 48.2 g ofwater at 21C. The final temperature of the mixture is 85.4C.
A solution formed by mixing 11.0 ml of 0.110 M HBr with 25.0 Ml of 0.190 M HCl. what is the ph of the strong acid?
A renowned laboratory reports a quadruple-point coordinates of 10.2 Mbar and 24.1 degrees C for four-phase equilibrium of allotropic solid forms
What are the steps needed in order to calculate the molar mass when given a freezing point depression. Please be as specific as possible.
At what temperature will a gas be at if you allow it to expand from an original 456 mL at 65 celcius to 3.4 L?
A chemical reaction at equilibrium is heated, briefly, by holding it over a flame. The equilibrium is seen to shift toward the products. What can be said about the enthalpy and entropy of the reaction
What is the minimum flow rate of water (? = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3? What is the mole fraction of NH3 in the scrubbed waste gas stream?
A student traces of brown deposite during the KMnO4 (NH4)2Fe(SO4)2 titration and quickly add more H2SO4 and continued his titration?Suggest what wil happen and why.
How to calculate wavelength of light emitted when transition in hydrogen atom? How caclulate wavelength in nanometers?
A sample of helium has a volume of 3 liters when the pressure is 500 torr. What volume does the gas occupy at 300 torr?
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