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A mixture of gases has the partial pressures of 0.308 atm due to He, .259 atm due to N2, and the rest is due to O2. If the total pressure of the mixture is 752 mmHg, what is the partial pressure due to oxygen?
a saturated solution of potassium chloride is prepared in 100.0g of water at 20c. if the solution is heated to 50c how
A 100ml sample of sodium bromide containde co104.62g of sodium bromide. upon evaporation, 6.280g of reside was obtained. frome this data calculate each of the folowing for the solution; a density of the solution
For the reaction BrO3- + 5Br-+ 6H+ ? 3Br2 + 3H2O at a particular time, -?[BrO3-]/?t = 1.5 ? 10-2 M/s. What is -?[Br-]/?t at the same instant
The frequency of the middle F note on a piano is 349.23 Hz. What is the wavelength of this note in centimeters. The speed of sound in air is 343.06 m/s.
the mass loss of the iron nail was 1.511. How many moles of iron were converted to Fe3+?
consider a van parked in a lot outside a professional football stadium in atlanta ga on a sunday afternoon. one ounce
manganese makes up 1.3 x 10-4 percent by mass of the elements found in a normal healthy body. how many grams of
Estimate the rate of corrosion in ipy and mm per year.
Dear Sir, I would be grateful for your help, If you could explain the trend in boiling points from phosphine to stibine. I would also want to know why the boiling point of ammonia does not follow this trend?
question phosphorylation can also serve to activate or inactivate specific enzymes. give an example of one amino acid
how many CH 3 groups are there, per 1000 C atoms (main chain)? ethylene-propylene rubber (EPR) is completely amorphous you may ignore the ends of the chains
Describe how the human defends itself after contracting a food-borne illness. Explain using chemistry and cellular responses
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