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Dry air is 78% nitrogen gas, 21% oxygen gas, and 0.9% argon gas. These gases can be separated by distillation after the air is first converted to a liquid. In one of the steps in this process, filtered air is compressed enough to increase the pressure to about 5.2 atm.
a) To what volume must 175 L of air at 1.0 atm be compressed to yield a pressure of 5.2 atm?
b) The argon derived from the distillation of air can be used in fluorescent light bulbs. When 225 L of argon gas at 0.997 atm are distilled from the air and allowed to expand to a volume of 91.5 m3, what is the new pressure of the gas particls?
what should this person do from this point on to get a reasonable yield of 1-octanol?
Describe how you would prepare each of the following aqueous solutions. - 230 g of a solution that is 0.60 molal in Na2CO3 starting with the solid solute. - 1.30 L of a solution that is 18.0% Pb(NO3)2 by mass. (density = 1.16 g/mL)
If you drink a glass of water, what mass, in grams, of this "unknown" substance will you ingest. The volume of your drink was 250 mL and the density of the water was 1.00g/mL.
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A buffer is 0.282 M C6H5COOH (aq) and 0.282 M NA(C6H5COO)(aq). Calculate the pH after the addition of 0.150 moles of nitric acid to 1.0 L of the buffer.
What is the internal energy change for the system if 969 joules of heat flows into the system from the surroundings and 253 joules of work is done by the system on the surroundings
Check all of the samples that will have ion dipole forces. You may want to review your notes in chapter 4 to make sure you understand the difference between strong electrolytes and non-electrolytes. HCl (aq) NH4Cl (aq) H2O (l) CO2 (g) KCl (aq) CH3..
The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron.
the epa limit for lead in the water supply is 15 parts per billion by mass. calculate the number of lead ions present
In a particular experiment, 2.25 g of NH3 and 3.75 g of O2 are placed in a container and allowed to react. How many grams of NO will have been formed when all of the limiting reactant has been consumed?
How did you deduce which spot corresponded to 2-naphthol on yourTLC plate that analyzed the reaction mixture at 10, 30, and 60 minutes. Did your TLC analysisindicate the presence of any 2-naphthol remaining atthe end of the 60-minute reaction time..
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