The osmotic pressure, Π, of a solution of glucose is 34.2 atm . Find the molarity of the solution at 298 K. Express the molarity to three significant figures and include the appropriate units.
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At 1 atm, how much energy is required to heat 65.0 g of H2O(s) at –18.0 °C to H2O(g) at 161.0 °C?
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Q: A mixture of 0.423 moles of N2 and 5.73 moles of CO2 has a total pressure of 777 torr. What is the partial pressure of N2?
Please give the details of the ploblem, thanks.
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Calculate the pH of a 25.0 mL sample solution of phosphoric acid if its requires 20.5 mL of 0.10 M NaOH to neutralize the solution. The acid dissociation constants are listed in See Table 16.3.
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What does the angle of twist mean in chemical compunds? Specifically BINOL.
Where can I find references?
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what are some of the possible impurities in the preparation of tetraphenylporphyrin and how does the purification scheme remove most of them in synthesizing tetraphenylporphyrin and cu(TPP) lab.
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(a) If the molar solubility of
Cd3(AsO4)2 at 25 oC is
1.15e-07 mol/L, what is the Ksp at this
temperature?
Ksp =
(b) It is found that 6.47e-05 g of Ag3AsO4
dissolves per 100 mL of aqueous solution at 25 oC.
Calculate the solubility-product constant for
Ag3AsO4.
Ksp =
(c) The Ksp of ScF3 at 25 oC is
5.81e-24. What is the molar solubility of ScF3?
solubility = mol/L
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Reaction 2: 10 mL of 0.1 M CuSO4 and 10 mL of 0.1 M NaOH Calculate the theoretical yield in grams of the product
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1)The Ksp of nickel(II) hydroxide, Ni(OH)2, is 5.84 × 10-16. Calculate the solubility of this compound in g/L.
2)The Ksp of CaSO4 is 4.93× 10–5. Calculate the solubility (in g/L) of CaSO4(s) in 0.350 M Na2SO4(aq) at 25 °C.
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combustion engine.
Discuss the thermodynamics of the Otto cycle for a combustion engine.
Why does the efficiency depend on the compression ratio?
What is the problem with that? Why is the Otto cycle better than a steam engine? Or, what is the main innovation
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Calculate the quantity of energy, in joules, required to raise the temperature of 486 g tin from room temperature, 25.0 °C, to its melting point, 231.9 °C, and then melt the tin at that temperature. (The specific heat capacity of tin is 0.227 , and the enthalpy of fusion of this metal is 59.2 J/g.)
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Sketch a graph for a titraton of a weak acid(burette) against 25cm^3 of strong base (conical flask). Assume that both have a concentration of 0.5M. Label axis please!
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calculate the amount of energy required to convert saturated water at 150 kpa to superheated steam at 180 C and at the same pressure.
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1. You make a solution of 0.464 moles HClO2 and 0.464 moles ClO2- dissolved in 1.00 L. What is the minimum number of moles of KOH would need to be added in order to 'overwhelm' this buffer?
2. You make a solution of 0.316 moles HClO2 and 0.464 moles ClO2- dissolved in 1.00 L. What is the minimum number of moles of KOH would need to be added in order to 'overwhelm' this buffer?
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the acid-dissociation constant for benzoic acid is 6.3*10^-5. calculate the equilibrium constant concentration of h30+, C6H5COO-, and C6h5COOH in the solution if the initial concentration of C6H5COOH is 0.050 M
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