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Dry ice is solid carbon dioxide; it vaporizes at room temperature and normal pressures to the gas. Suppose you put 26.6 g of dry ice in a vessel fitted with a piston, and it vaporizes completely to the gas, pushing the piston upward until its pressure and temperature equal those of the surrounding atmosphere at 21.7 °C and 751 mm Hg. Calculate the work done by the gas in expanding against the atmosphere. Neglect the volume of the solid carbon dioxide, which is very small in comparison to the volume of the gas phase.
determine at what temperature must a balloon be heated to have six litres volume consider that the balloon was at the
The system then re-equilibrates. The appropriate chemical equation is PCl3+Cl2PCl5. Calculate the new partial pressures after equilibrium is re-established
A certain reaction A ? products is second order in A. If this reaction is 10.% complete after 20. s, how long would it take for the reaction to be 90.% complete
Describe the roles played by Max Planck, Niels Bohr, Erwin Schrodinger, Paul Dirac, Albert Einstein and Werner Heisenberg in the development of atomic or quantum theory.
In the following buffer system, what happens to the concentration of the highlighted molecule if you add base in the form of OH-. HF + NaF + H2O F- + H3O+ + Na+
The mass percent of glucose(C6H12O6) in human blood is 0.102%. The density of human blood @ 37 C is 1.08 Kg/L. Assume the mixture of non-glucose components in blood is the solvent.
Explain how many mL of 0.105 M HCl are required to titrate each of the subsequent solutions to the equivalence point: a) 22.5 ml of 0.181 M pyridine
What formula of the percipitate formed? and what do you observe upon the addition of dilute HNO3 and what equillibrium has been disturbed? would you expect lead chloride to dissolve in dilute HNO3? Explain
For the first-order reaction below, the initial concentration of A is 0.240 M. If the concentration of A decreases to 0.0800 M after 21.8 hours, what is the half-life of the reaction
If 0.015 M NaCl shows conductivity of 12,000 units, based on "total ion concentration" what conductivity should be observed for 0.030 M Na2SO4?
A sample of commercial hydrogen peroxide solution was analyzed using the procedure in this experiment. the results from three determinations were 3.03% ,2.89% and 3.22%
How man protons,neutrons, and electrons are there in the neutral atom of the isotope of silver named silver-109
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