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The reactant concentration in a first-order reaction was 8.20×10?2M after 10.0s and 6.10×10?3M after 90.0s. What is the rate constant for this reaction?
Calculate the vapor pressure of water above this solution at 338 K. The vapor pressure of pure water at this temperature is 0.2467 atm
Calculate the mass of the protein that must be dissolved in 40 mL of water to obtain this concentration
Convince yourself that function exp(-4x) is an eigenfunction of operator d/dx. Compute the corresponding eigenvalue.
Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of water to produce a solution that freezes at -14.5 C?
What is the numerical value (ignore units) of the equilibrium constant for the following reaction
how many ml of concentration sulfuric acid, 94%(g/100g solution), density 1.831 g/cm3 are required to prepare 1L of 0.100 M solution.
At 2000°C the equilibrium constant for the reaction is Kc = 2.4 103. 2 NO(g) N2(g) + O2(g) If the initial concentration of NO is 0.100 M, what are the equilibrium concentrations of NO, N2, and O2? A) [O2] _ M B) [N2] _ M C) [NO] _ M
How many grams of Na3PO4 is needed to produce 575mL of a solution that has a concentration of Na+ ions of 1.50M?
The current concentration of carbon dioxide in the atmosphere is 378 ppmv. Annual anthropogenic additions to the atmosphere are about 8 Gt (as C) of which about 4 Gt are removed into the oceans and terrestrial environment.
An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3g, what is this substance's density?
When NaOH is added to the reaction mixture, Cu(OH)2 does not immediatly precipitate. What else in the reaction mixture reacts with NaOH before Cu(OH)2 is formed?
Explain briefly why CuSO4 is more soluble in water than in organic (nonpolar) solvent.
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