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If the mixing ratio of ozone in a polluted urban atmosphere is 50ppbv, compute its concentration:
(a) In mg m-3
(b) In molecules cm-3
The reading on the tank pressure initially rises very quickly then much more slowly eventually reaching a value of 3.27 mpa. A ssume T final=19C. How many moles of air in the tank initially ?
Calculate the solubility of LaF3 in grams per liter in 1.3×10-2 M KF solution.
Write the two half-cell reactions. 2. determine E red for the the reaction involving Pd 3. Sketch the voltaic cell, label anode and cathode, and indicate the direction of electron flow
Furthermore, you conducted the experiment using Styrofoam coffee cups because of their effective insulation capabilities. Therefore, you were able to accurately measure the molar enthalpy change of the acid-base reaction.
The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 28.0 mV at 25 °C. Calculate the concentration of the Zn2
If one starts with five grams of acryl amide and forms a gel, explain what would be the molecular weight of the polymer if 60% of the acryl amide reacts assuming that you form a single polymer molecule. Acryl amide: CH2=CH-CO-NH2
What is the change is volume when 1.00 mol of CH4 reacts with 2.00 mol O2? What is the w for this chnage? Calculate the change in internal energy, U, for the change indicated by the chemical equation
Treatment of X with Ag(NH3)2 (silver diamine complex), yields a solid Z. When X is treated with H2O/H2SO4, an optically active product W, C7H14O, is formed. Draw the structures of X, Y, Z, and W.
Determine the volume of .450M NaPO4 is needed to precipitate all the lead(II) ions from 190.0mL of .550M Lead(II) nitrate?
A sample of K2S contains 1.35 g of potassium. How many moles of potassium sulfide are present in the sample
A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the wavelength. (Hint: MHz means 1 x 106 Hz.)
A system conducts 238 cal of heat to the surroundings while delivering 331 cal of work. what is the change in internal energy of the system (in cal).
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