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Question- There is a 7.50 L container of 3 gases N2, O2 and unknown. The total pressure is 2.1 atms and the partial pressures of O2 and N2 are 0.60 atm and 0.35 atm. The temperature of the container is 25 degrees Celsius. What is the number of moles of the unknown gas?
Explain the each step. Explain the process and each step
a) A solution of 1-iodohexane b) A solution of (S)-2-iodohexane c) A solution of 40% (S)-3-chlorohexane and 60% (R)-3-chlorohexane d) A solution of equal quantities of R and S 3-chlorohexane
D2O with a mass concentration of 80 mg/cm3 in a 0.10-mm-long absorption cell is found to have a transmittance of 8.3% for infrared radiation of wavelength 6000 nm. Find the absorbance of the solution and the molar absorption coefficient of lysozym..
Write a chemical equation for the formation of methionyl glycine from the constituent amino acids.
A reactant R is being consumed in a first-order reaction. What fraction of the initial R is consumed in 4.0 half-lives
An unknown white solid is either NaC2H3O2, AgNO3 or BaCl2. The white solid dissolves in water. The dissolved unknown precipitates when either aqueous potassium carbonate or aqueous lithium bromide is added. What is the unknown
in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction
For a particular liquid, raising its temperature from 330 K to 353 K causes its vapor pressure to double. What is the enthalpy of vaporization of this liquid? (R = 8.31 J/(K· mol))
High levels of ozone (O3) make rubber deteriorate, green plants turn brown, and cause people to have difficulty breathing. Calculate delta G at 298 K for the formation of 1 mole of O3 from O2 in urban smog, where [O2]=0.210 atm and[O3]=5.00x10^-7 ..
The Ka of a monoprotic weak acid is 7.78 × 10-3. What is the percent ionization of a 0.141 M solution of this acid?
What is the length of the side of the unit cell for iron and what is the atomic radius?
Show the mechanism for each step of the following reaction scheme- 3-methyl-1-pentene in CH2Cl2 treated with HBr, then NaOH, 1/3 mol equivalent of BH3?tHF and then H2O2/NaOH
Two solid forms of elemental sulfur (S8) are rhombic and monoclinic, denoted A and B, respectively. For the transformation S8(s,A) --> S8(s,B), dH* = 330 J/mol and dS* = 80 J/mol*K.
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