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Sketch the log C - pH diagram for 10-4 M NaHCO3. Use your ENE/MBE to graph to find the pH of the following solutions.
a. 10-4 M H2CO3. Show your work and label the point as point A on your graph.
b. 10-4 M NaHCO3. Show your work and label the point as point B on your graph.
c. 10-4 M Na2CO3. Show your work and label the point as point C on your graph.
A proton in a linear accelerator has a de Broglie wavelength of 144 pm. what is the speed of the proton?
This indicates that the solution is now more acidic, and the reaction shifts to the right, working to lower the concentration of hydrogen ions, and return to equilibrium
How many grams of F- must be added to a cylindrical water reservoir having a diameter of 8.88 × 102 m and a depth of 78.88 m? (b) How many grams of sodium fluoride, NaF, contain this much fluoride?
What are some of the general properties that distinguish metals from ceramics and polymers?
a sample of gas occupies 12 liters under a pressure of 1.2 atm. what would its volume if the pressure were increased to 2.4 atm? assume the the temperature of the gas does not change.
When ammonia is added to nickel ions in aqueous solution, the water molecules bound to the Ni2+ are replaced by ammonia molecules.
calculate the number of excess reagent units remaining when 84 C2H4 molecules and 270 O2 molecules react?
The free energy change Delta G at 2400 K is equal to 1.22*10^5 J/mol. Calculate the equilibrium constant at 2400 K
Calculate the change in molar Gibbs free energy of tristearin when a deep-sea creature is brought to the surface (p = 1 atm) from a depth of 1.5 km. The density of sea water is 1.03 g/cm-3.
A green leaf has a surface area of 2.10 cm^2. If solar radiation is 1150 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
What will be the theoretcal yield of tungsten(s) ,W, if 45.0 g of WO3 combines as completely as possible with 1.50 g of H2? WO3(s) + 3H2(g) => W(s) + 3 H2O(g)
How many moles of HCl are required to react with 0.610 g of Al(OH)3 in the above unbalanced reaction? Use at least as many significant figures in your molar masses as in the data given.
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