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Problem- How many kilograms of CaH2 are needed to fill a 145L tank with compressed H2 gas at 158atm pressure and 29oC?
Please show how you obtained the answer
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
For 500 mL of phosphate buffer with 0.5 M of H3PO4 and 0.3 M NaH2PO4 calculate acidic and basic buffer capacity. How much of strong acid should be added to shift buffer pH one unit down, and how much of the strong base is needed
Determine the mass of nitrogen gas produced and calculate the volume occupied by this mass of gas at room temperature of 23C.
How much sodium nitrate (NaNO3), in grams, should be added to water to prepare .05L of solution with a molarity of .25M?
The concentration of sulfuric acid, H2SO4 is 36M. What volume is required to prepare 6.0 L of 0.12 M acid
what is the cell potential at 25 ?C if the concentrations are [Co3+]= 0.852M , [Co2+]= 0.545M , and [Cl?]= 0.313M and the pressure of Cl2 is PCl2= 6.10atm
The reaction between zinc bromide and silver nitrate
A student does a mini-titration with an unknown acid by adding 13 drops of 2M NaOH to 9 drops of the unknown solution. What is the concentration of the unknown acid
Normally the alkaline earth carbonates (MCO3; M = Mg^2+, Ca^+2, Sr^+2, Ba+2) are insoluble in water. Why would the method used in this experiment work for calculating the molar mass of the alkaline earth? How would the calculations have to be cha..
Explain in your own words what consitutes a buffer solution. Then explain how this solution resists changes in pH when strong acids or strong bases are added to it.
You have CH3COOH what if any experimental evidence do you have that the equilibrium is affected by the addition of solid CH3COON. Briefly explain. Are your observation and explanation in consistent with Le Chatelier's principle? Briefly explain.
Explain the mass of the electron is 9.11 x10-31kg. Planck's constant has the value h = 6.63 x10-34 J-s. Define what is the characteristic wavelength of this electron
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