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Presume the major solutes in intact lysosomes a cellular organelle are KCI (0.1 M) and NaCl (0.03 M). We wish to isolate lysosomes from intact cells in our labs, such that the membrane of the lysosomes doesn't rupture. Presume the experiment is performed at room temperature 25 degrees C, what concentration of sucrose must we use in the extracting solution to make sure the lysosomes don't rupture with the knowledge that sucrose doesn't dissociate?
The solubility iof sodium chloride in water is 35.9 g NaCl/100 g of water at 25 degrees celsius. Calculate the mass percent and molality of NaCl in a saturated solution.
When solid Ca(CH3COO)2 is dissolved in a nearly saturated solution of Ca(CH3COO)2 the solution becomes warmer. This information indicates that if the temperature of a solution is decreased
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
Polyunsaturated fatty acids (PUFAs) have several carbon-carbon double bonds as present in beta-carotene
Give the product expected from the reaction of cis-1,2-diacetylcyclohexane with aniline. Suggest a reason for the unsuitability of 2,4-dinitroaniline as a replacement
State the Grignard reagent phenylmagnesium bromide reacts with hexanal to give a product with a new chiral centre. Would you anticipate to get one enantiomer (predominantly or exclusively) or a racemic mixture. Why
An antacid tablet containing calcium carbonate as an active ingredient required 26.8mL of .112 M HCL for complete neutralization. What mass of CaCO3 did the tablet contain?
How much heat energy would be needed to raise the temperature of a 15.0 g sample of iron (C = 0.448 J/goC) from 22.0 oC to 100.0 oC?
a water tower supplies water through the plumbing in a house. a 2.54-cm-diameter faucet in the house can fill a
Calculate the pH of a buffer formed by mixing 60. mL of 0.13 M lactic acid with 86 mL of 0.26 M sodium lactate.
A mixture of 0.156 moles of C is reacted with 0.117 moles of O2 in a sealed 10.0L vessel at 500.K, producing a mixture of CO and CO2. The total pressure is 0.640 atm. What is the partial pressure of CO
The energy required for the ionization of a certain atom is 3.44 x 10-18 J. The absorption of a photon of unknown wavelength ionizes the atom and ejects an electron with velocity 1.03 x 108 m/s. Calculate the wavelength of the incident of radiatio..
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