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A certain first order reaction is 47% complete in 45 seconds. What are the values of the rate constant and the half-life for process?
Write an orbital diagram for the ground state of the Calcium atom. Is this atomic substance diamagnetic or paramagnetic
Consider the following reactions and their associated equilibrium constants: A + 2B ~~~> C K1 C ~~~> D + E K2 For the reaction A + 2B ? D + E, having equilibrium constant Kc, A) Kc = K1 + K2 D) Kc = (K1)(K2) B) Kc = K1/K2 E) Kc = K2/K1 C) Kc = K1 ..
a sample of a solid of 29.19 grams is placed in a flask. toluene is added to the flask toluene in which the solid is
Write the balanced neutralization reaction between H2SO4 and KOH in aqueous solution. Phases are optional.
A radioactive sample of 100g has been reduced to 1.56g in 85 years. How long is the half-life?
Calculate the pH of a solution made by adding 51 g of sodium acetate, NaCH3COO, to 18 g of acetic acid, CH3COOH, and dissolving in water to make 700. mL of solution. Hint given in feedback.
Determine the balanced chemical equation for this reaction. CaH18(g) + O2(g) > Ca2(g) + H2O(g) Enter the coefficients for each compound in order, separated by commas
Calculate the pH of a solution prepared by mixing 300 mL of 0.25 M sodium hydrogen ascorbate and 150 mL of 0.2 M HCl plus water to a final volume of one liter. The Ka of ascorbic acid is 5 x 10-5.
Calculate the volume of carbon dioxide formed at a pressure of 2.50 atm and a temperature of 1250C.
A gas filled balloon with a volume of 12.5 L at 0.90 atm and 294 K is allowed to rise to the stratosphere where the temperature is 268 K and the pressure is 1.0 millibar. What is the final volume of the balloon ? (1.0 atm = 1.013 bar).
Assuming that concentrated HNO3 (70% HNO3) is 16M, what is the molarity of a 1:1 HNO3:Water solution
Cells use the hydrolysis of adenosine triphosphate, abbreviated as ATP, as a source of energy. Symbolically, this reaction can be represented as ATP(aq) + H2O(l) ? ADP(aq) + H2PO4-(aq)
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