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Question - Use the appropriate standard reduction potentials to calculate the value of K at 25 degrees Celcius for the reaction
NiO2(s) + 2Cl^-(aq) + 4H^+(aq) ---> Cl2(g) + Ni^2+ (aq) 2H2O(l)
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The sample is titrated to the phenolphthalein endpoint with 15.17 mL of a sodium hydroxide solution. What is the molar concentration of the NaOH solution
a 5.0 g sample of a hydrate of CaCl2 was heated, and only 4.3 g of the anhydrous salt remained. what percentang of water was in the hydrate?
When determining the major contributor for a resonance structure, is it better to have a carbocation (positive charge on a carbon but without a complete octet) or is it better to have a positive charge on an electronegative atom like oxygen
When taking a boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
Problem- Experimentally, acetate buffer HC2H3O2-C2H3O2^- can be prepared in different ways. Calculate the approximate pH of an acetate buffer solution prepared by mixing equal volumes of 0.10 M HC2H3O2 and 0.10 M NaC2H3O2 (Ka, HC2H3O2 = 1.8 x 10^-5..
A metal object with a mass of 19 g is heated to 96 degree celcious, then transferred to a calorimeter containing 75 g of water at 18 degree celcious
Air bags are activated while a severe impact causes a steel ball to compress a spring as well as electrically ignite a detonator cap. This action causes sodium azide(NaN3) to decompose explosively according to the subsequent reaction.
the protein (dissolved in water) displays an osmotic pressure of 319.88 Pa at 310.15 K. If the volume of the protein solution is 22.0 mL, what is the molar mass of the protein?
The standard molar entropy for Br2(g) is 245.46j/(mol*K) at 25 degrees Celsius. Given that delta S=104.58J/K for the dissociation of one mole of Br2(g) into Br(g) at 25 degrees, find the standard molar entropy for Br(g) at 25 degrees Celsius.
What are the products expected to be formed in good yeild in the reaction 2-methyl-1-hexene is treated with a dialkylborane prepared from borane and an optically active sample of alpha-pinene, and then wit basic hydrogen peroxide.
Water molecules can undergo a self-ionization reaction to produce very small concentrations of hydronium and hydroxide ions
A colored complex of unknown sample solution exhibits 23% transmission through 1-cm long cuvette. A 1/1 dilution solution exhibits a transmission of 47.8%. The transmission from the blank solution is 96%. Calculate the molar absorptivity of the co..
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