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Problem- A 6.72 g sample of a salt is dissolved in 100.0 g water, in a constant pressure calorimeter. The initial temperature of the water is 21.50 oC, and the final temperature was 18.63 oC. Calculate the heat of solvation for the salt, as J/g. Is the process endo- or exothermic?
I want you to explain the chemistry in this problem
the mass of a cube of iron is 434 g. iron has a density of 7.87 gcm3. what is the mass of a cube of lead that has the
using a beaker that contains 100 ml of h2o thermally insulated from its surroundings one mol of solid cacl2 is mixed
Question- a 100.0 ml aliquot of .100 M diprotic acid H2A (pk1=4.00, pk2=8.00) was titrated with 1.00 M NaOH. Find the pH at the following volumes of base added 11, 15, 19, 20, and 22ml
To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 28.8 L of 3.00 M acid to enough water to make 500. L. What is the mass of sulfuric acid per milliliter of the diluted solution
Question- The Nuclear mass of Fe-56 is 55.9207 amu. Calculate the binding energy per nucleon for Fe-56. (units J/nucleon)
What is the relative spread (in ppt) of the two values? (Note: ppt is part per thousand. Keep one decimal place in your answer.)
Sodium chloride has a solubility of 35.7g/100mL water. If you have 350mL of water and you add 115g of sodium chloride to it and mix well
Problem- If you take a 10.0-mL portion of the stock solution and dilute it to a total volume of 0.300L, what will be the concentration of the final solution
The molar heat of fusion of water is 6.01 kj/mol. How much heat energy is required to melt one ice cube in a soft drink to form liquid water a 0 degree celcius, if the ice cube has a mass of 18.9 g?
In an electrolytic cell Mn2+ is reduced to Mn and Sn is oxidized to Sn2+. Write an equation for the half-reaction occurring at the anode and at the cathode.
Ten grams of hamburger were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth of a mL of this slurry was added to 9.9 mL of sterile buffer.
A solution is made by dissolving 716.2 g of H3PO4 to water as well as diluting to a total volume of 750 mL. Compute the pH, pOH and equilibrium concentrations of [H3PO4], [H2PO4], [HPO4 2-], and [PO4?
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