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Define the effect that van der Waals forces have in folding of globular proteins. Explain what sort of structures can be affected by van der Waals forces? Explain how would proteins fold differently in a world without van derWaals forces?
A 28.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings
Beryllium(II) forms a complex with acetylacetone (166.2g/mol). Calculate the ?molar absorptivity of the complex, given that a 1.34-ppm solution has a transmittance of 55.7% when measured in a 1.00-cm cell at 295 nm, the wavelength of maximum absor..
A large cylinder of He gas,such as that used to inflate balloons,has a volume of 25.0 L at 22 Celsius and 5.6 atm. how many moles of He are in such a cylinder ?
Adrenaline contains 13 hydrogen atoms, 9 carbon atoms, 3 oxygen atoms, and 1 nitrogen atom. What is the chemical formula for adrenaline. Express your answer as a chemical formula.
use the van der waalsequation to determine the molar volume of steam at 200 bar and 500degc. compare this value with
Compute the bicarbonate and carbonate alkalinities, in mg/L as CaCO3, of the water having a total alkalinity of 233.0mg/L as CaCO3 and a ph of 10.47
what is the freezing point of solution made up of 54.9 g of NaCl dissolved in 800 g of water
The solution was cooled in an ice-water bath for 10 minutes and pure crystals were obtained. The crystals were filtered on a Hirsch funnel and rinsed with about 0.5 mL of ice-cold ethanol. After drying, the weight of the crystals was found to be 5..
A chemical reaction at equilibrium is heated, briefly, by holding it over a flame. The equilibrium is seen to shift toward the products. What can be said about the enthalpy and entropy of the reaction
Describe how you would make 4 liters of a 0.075 M phosphate buffer at pH of 7.15 without using a pH meter, if the only materials
Niobium has an atomic radius of 0.143 nm as well as a density of 8.57g/cm3. Find out whether it has an FCC or BCC crystal structure.
When a carboxylic acid is reacted with a strong base, the product is aA.carboxylic acid
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