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Question- The decomposition of N2O5 is a first order process. How many half-lives would be required to decompose 99% of the sample?
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Define what is the cell potential of the following voltaic cell at 25 degrees Celsius Zn (s) Zn2+ (0.200 M) Ag+ (0.00200 M) Ag (s)
Question- What are some of the possible uses of paper chromatography and other similar types of chromatography such as thin layer chromatography. Select all that apply.
For each of the reactions, calculate the mass (in grams) of the product formed when 15.51g of the underlined-?vAssume that there is more than enough of the other reactant.
The second-order reaction, 2 Mn(CO)5 Mn2(CO)10 has a rate constant equal to 3.0 x 109 M-1s-1 at 25°C. If the initial concentration of Mn(CO)5 is 1.0 x 10-5 M.
A gas occupying a volume of 395 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
The kinetic energy of the emitted electrons is measured to be 11.7 eV. What is the first ionization energy of Hg in kJ/mol? kJ/mol (d) Using this figure of ionization energies, determine which of the halogen elements has a first ionization energy ..
While 1.65 g of menthol is dissolved in 25.0 g of cyclohexane the freezing point of the solution is lowered by 8.78 °C. The freezing point as well as Kf constant for cyclohexane can be found here. Compute the molar mass of menthol.
The standard cell potential for the following galvanic cell is 0.92V. Al(s) Al3+(aq) Cr3+(aq) Cr(s). Calculate the standard reduction potential for Cr3+/ Cr Cr half cell.
Explain what is the resulting total pressure of gases in the now-joined flasks? Presume no reaction between the gases and that the gases behave ideally
A sample of natural gas contains 1 mole of gas X, 0.5 mole of gas Y, and 3.5 moles of gas Z. If the partial pressure of gas x is 0.4 atm, what is the partial pressure in atm of gas Z
What mass of CCl2F2 substance must evaporate in order to freeze 109 of water initially at 24 degrees celsius? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/gK .)
The sample lost 0.506g of mass. After reacting with aluminum wire, 0.595g of copper was recovered. How many moles of water, copper and sulfate were in the compound. What is the mole ratio of these 3 components
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