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When a system is in a state of chemical equilibrium, a state of apparent rest, is anything going on at the molecular or ionic level?
Explain why bubbles are observed to emerge from the jar when it is in the boiling water. b. Explain why the lid "pops down" on the jar top soon after removing the jar from the boiling water.
The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 nm and 97.2 nm, respectively.
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.407 times
Calculate the number or calories of heat energy required for warming 34.6g of water from 18.9 celsius to 29.9 celsius
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co
the lab was synthesizing acetyl ferrocene from acetic anhydride and ferrocene then doing column chromatography on it if you wanted to modify the experimental procedure to synthesize diacetylferrocene, what changes might you consider?
Calculate the concentration of cadmium chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.
the set of transitions where the electron falls from a higher level to the nf = 4 state is called the Pickering series, an important series in solar astronomy. Calculate the Pickering series wavelength associated with the excited state ni = 8.
The equilibrium constant for this reaction is 1.70 x 10^-3. Suppose that 0.860 mol N2 and 0.580 mol O2 are mixed in a 4.00-L reaction vessel. What will be the concentrations of N2, O2, and NO when equilibrium is established?
t 50°C the value of KW is 5.5 x 10-14. What are the molarities of hydronium ion and hydroxide ions in a neutral solution at this temperature.
When 24.0 g of glucose (a nonelectrolyte) are dissolved in 500. g of water, the solution has a freezing point of -0.47°C. What is the molar mass of glucose? Kf of water is 1.86°C/m.
Iron is extracted from its ore using carbon. This can be represented using the following equation. Calculate the percent atom economy for pure iron.
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