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Assuming pH correction is going to be required, how might you be able to build a buffer solution of a given molarity at any pH without doing a single Henderson- Hasselbalch calculation?
Students at the University of North Texas and the University of Washington built a car propelled by compressed nitrogen gas. The gas was obtained by boiling liquid nitrogen stored in a 195.0 L tank.
Important information about Imidazole. The imidazole ring system has a great deal of aromatic character. Can you formulate two resonance structures that account for the characteristics?
Calculate the quantity of heat in calories release when 241.62 g of water is cooled from 80.6°C to 28.0°C.
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction C2H6 (g)+ H2 (g) -> 2CH4
What are the percentages of each molecular ion? (List to nearest 1% in order of increasing mass separated by commas, e.g. 55,45.)
"If the crystal field splitting (Δo) is 3.44×10-19 J for a cobalt compound, what wavelength of light (in nm) is absorbed when an electron from a lower energy d orbital is promoted to a higher energy d orbital? What color will the cobalt compound a..
How many grams of NaCl must be added to 250g water to lower the vapor pressure by 1.30 mm Hg at 40 degrees C assuming complete dissociation?
The atmospheric pressur on Pluto is 3 microbars. Express this pressure in bars, kPa, atm, and torr.
What is the heat change in J associated with 65 g of gaseous acetic acid at 127 oC changing to solid at -50 oC? c(acetic acid) (g) = 1.11 J/(g.K) c(acetic acid) (liq) = 2.18 J/(g.K) c(acetic acid) (s) = 1.32 J/ (g.K) ?Hfus(acetic acid) = 192 J/g ?..
Identify and discuss three key features associated with the combustion of polymeric materials or compounds that are relevant to the safety
A mixture of 70 mole% propane and 30 mole% hydrogen is burned with 30% excess air.
The mass of a cube of iron is 324 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
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