Molar concentration of the ammonia
If 17.9 mL of 0.800 M~rm HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
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The wavelength of the emitted photon corresponds to the difference in energy between the two energy levels. What were the principal quantum numbers of the initial and intermediate excited states involved?
A piece of galena has a volume of 4.7 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
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Consider an insulated system containing 80 g of liquid water and 80 g of ice at equilibrium under atmospheric pressure. A total of 16 g of steam at 120 C is admitted to the system. What is the phase composition and temperature when equilibrium is
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A sample containing 0.187 g Cl- is dissolved in 50.0 mL water. How many moles oc Cl- ion are in the solution? What is the molarity of Cl- ion in the solution?
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