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Consider a neuron at rest at 37°C with ion concentrationsinside and outside the cell as at right inside outside
Na+ 10 mM 150 mMK+ 70 mM 5 mMi) What is the voltage due to only the difference in concentrations of K+ across the membrane (outside - inside) under these conditions?
ii) What voltage must be applied to the membrane to open a K+channel? In other words, at what voltage are there equalconcentrations of (only) K+ across the membrane?
Calculate the molarity and the molality of an NH3 solution made up of 36.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Describe the reaction as endothermic or exothermic, and reversible or irreversible. B) A reaction has Horxn = 5.0 kJ/mol and a forward activation energy, Ea = 55 kJ/mol. What is the activation energy for the reverse reaction?
A sample of sodium reacts completely with 0.355 of chlorine, forming 585 of sodium chloride. What mass of sodium reacted?
the heat capacity for the heat capacity of the calorimeter in calculating the enthalpy of reaction. What effect would ignoring this have on the calculation?
Determine the V of a voltaic cell (E°cell) if it is required to do 5.43 × 10¯3 Kilo Joule of work when a charge of 2.50 C is transmitted.
suppose the flame on a gas burner emits light just like a blackbody. the flame appears blue emitting most of its light
Compound A (C10H16O3) is insoluble in H2O, but soluble in bicarbonate solution. It yields a 2,4-dinitrophenylhydrazone derivative. Catalytic hydrogenation of Compound A
What are the 8 balanced molecular equations for all of the chemical reactions involved in the copper cycle experiment
If an aqueous solution has a hydroxide ion concentration ([OH-]) of 5.94 x 10-5 mol/L, what is the hydronium ion concentration? 4.48 x 10-12 mol/L 1.68 x 10-10 mol
A neon sign is made of glass tubing with an inside diameter of 2.0 cm and length of 4.0 m. If the sign contains neon at a pressure of 5.5 torr at 27 degrees celcius, how many grams of neon are in the sign
Hydroxylapatite, Ca10(PO4)6(OH)2, has a solubility constant of Ksp = 2.34 × 10-59. Solid hydroxylapatite is dissolved in water to form a saturated solution. What is the concentration of Ca2 in this solution if [OH-] is somehow fixed at 5.30 × 10-6..
Write a balanced chemical equation that shows the reaction that occurs when an aqueous solution of BaCl2 reacts with an aqueous solution of Na2SO4 to form aqueous sodium chloride and solid BaSO4. In your equation, you should indicate the physical ..
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