chemistry
A 1.857 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.540 grams of KI and 50.00 mL of a 0.00912 M KIO3 solution. The excess I3– was titrated with 50.00...
Chemistry
Calculate the de Broglie wavelength associated with a body of mass 1.5 kg moving with a velocity of 100m/s.
Chemistry
The density of platinum is 23.4 g/cm cubed. Calculate the mass of 75.0cm cubed of platinum.
business Communication
Which of the following is NOT an example of parallel structure? a. Yoga can help you develop flexibility, reduce stress, and increase relaxation. b. Learn how to analyze business audience, improve your style, and edit thoroughly. c. You are all encouraged to come and shart ide...
college chemistry
I tried doing that but the value was so high that I wanted to compare answers with something you would get DrBob222. My answer was something e^136
college chemistry
The voltaic cell described by the balanced chemical reaction has a standard emf of 4.05 V. Calculate the equilibrium constant (Kc) for the reaction at 25 oC. Round your answer to 3 significant figures. F2(g) + Mn(s) → 2F-(aq) + Mn2+(aq) Mn2+/Mn -1.18 F2/F- +2.87 0 °C...
college chemistry
how do you balance this redox equation? Co(OH)2(aq) + Na2O2(aq) → Co(OH)3(s) + NaOH(aq)
college chemistry
The rate of the following reaction: 2 NO2 2 NO + O2, is characterized by the rate constant k = 0.775 L·mol-1s-1. What is the half-life for this reaction at the same conditions when the initial concentrations are 0.0115 M? (Round your answer to 3 significant figures.) Hi...
college chemistry
A solution of C6H5CO2Na hydrolyzes according to the equation. If the [C6H5CO2H] in the solution after hydrolysis is 0.00000294 M, calculate the equilibrium concentration of C6H5CO2Na. C6H5CO2-(aq) + H2O(l) = OH-(aq) + C6H5CO2H(aq) Kh=1.59×10-10 What does Kh stand for? Is...
college chemistry
The base dissociation equilibrium constant (Kb) for C5H5N is 1.40×10-9 (eq. 1). (eq. 1): C5H5N(aq) + H2O(l) = OH-(aq) + C5H5NH+(aq) Calculate the value of the equilibrium constant (Ka) for the hydrolysis of C5H5NH+ as shown in the reaction (eq. 2). (eq. 2): C5H5NH+(aq) +...
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