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Exactly 1.0 L of hydrogen gas(H2)is collected over water at 292 K under a total pressure of 152Torr. If the vapour pressure of water is 16.5 Torr at this temperature, what is the mole fraction of hydrogen in the gassample
One mol of this compound at 325 K is cooled at constant P to 275 K by contact with a large reserve at 275 K. The temperature of the reserve does not change.
find the number of representative particles in each substance a)3.00 mol Sn b)0.400 mol KCI c)7.50 mol SO2 d)4.80x103 mol NaI
The osmotic pressure of the solution is measured to be 8E-4 bar at 25 C. What is the calculated molar mass of the protein?
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
What volume of O2 at 684mmHg and 37degree celsius is required to synthesize 22.0 mole of NO2.
A solution which is 0.010 M in both Mg2+ and Mn2+ ions is buffered to pH 9.30 using an aqueous ammonia-ammonium chloride solution. Under these conditions, only one metal hydroxide precipitates.
A mixture of gases contains 10.30g of N2 , 1.79g of H2 , and 8.15g of NH3. The total pressure of the mixture is 1.95 atm. What is the partial pressure of N2
calculate w.Part B If the temperature of 347g of water is increased by 22.7K , calculate q.Part C If the temperature of 347g of water is increased by 22.7 K, calculate Delta H.Part D If the temperature of 347g of water is increased by 22.7K , calc..
What is the normality formula. What is the normality of: a) 0.45M Al(OH)3 b) 0.122M H2SO4 c) 0.675M H3PO4
what are the expected impurities in acetophenetidin synthesis?
Give the structure of the phosphorus ylide and carbonyl compound you might use to prepare the following alkenes
The pressure on a gas at -77 deg. C is doubled, but it's volume is held constant. What will the final temperature be in degrees C
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