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A galvanic cell is composed of these two half cells, with the standard reduction potential shown: Co2+(aq) + 2e- <--------> Co(s) -0.28 volt Cd2+(aq)+ 2e- <----------> Cd(s) -0.40 volt The actual concentrations are: Co^2+(aq) = 0.00100M, Cd^2+= 0.100M. What is the potential of this galvanic cell?
Calculate the amount of heat energy required to convert 55.0 g of water at 62.5 degrees Celsius to steam at 124.0 degrees Celsius
How do you write structural formulas for all the constitutionally isomeric compounds having the given molecular formula C3H9N,
calculate (a)molality? (b)molarity of NaCl? (c) What is the mass/mass and remove the most loosely held e- from a gaseous atom in a ground state
A voltaic cell is constructed that uses the following reaction and operates at 298 K. (Ered Ni+2 is -0.277) Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions?
Write lewis structures for each of the following species. Use expanded octects as necessary.
Which of the following would be expected to be colored?
What mass of carbon dioxide is produced from the complete combustion of 6.50×10-3 of methane?
Identify the conjugate base of each of the following compounds: HNO2, HClO, H3PO4, and NH3. Identify the conjugate acid of each of the following species: NH3, ClO2-, SO4^2-, and OH-
Write a balanced equation for the reaction of 2-octanol and surphuric acid. what products are formed?
H2S (aq) is a polyprotic acid, meaning it can dissociate its hydrogen ion more than once. However, HS- (given its negative charge as well as its extra hydrogen ion) can act as either a base or an acid
Discuss the common-ion effect by comparing the solubility of CaCO3 in 3.0 x 10^2 mL of water and in the presence of 0.015 mol of Ca(NO3)2.
Write the reaction for the hydrolysis of propionyl propionate (an ester) -- that is, the reaction of this ester with water, yielding a carboxylic acid and an alcohol.
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