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1) Consider an electrochemical cell with a zinc electrode immersed in 1.0 M Zn2+ and a nickel electrode immersed in 0.10 M Ni2+. SHOW CALCULATIONS
Zn2+ + 2e- Zn Eo= - 0.76 V
Ni 2+ + 2e- Ni Eo= - 0.23 V
A. 0.53 v B. 0.50 V C. 0.56 V D. 0.47 E. none of these
2) If an electrolysis plant orperates it's electrolytic cells at a total of 1.0 x 106 amp. How long will it take to produce one metric ton (106 grams) of Mg(a) from seawater containing Mg2+? SHOW CALCULATIONS.
A. 2.2 hours B. 2.4 days C. 55min D. 3.7 hours E. none of these
What wavelength of radiation must be used to eject electrons with a velocity of 1.5 X 10^3 km s-1
What is the percent yield of a reaction where 15.3g of oil of wintergreen is collected after 16.3g salicylic acid
A specimen of aluminum having a rectangular cross section of 15 mm x 18 mm is pulled in tension with 55,000 N force, producing only elastic deformation. Calculate the strain
The density of hydrogen gas in a flask is 0.147 g/L at 305 K. what is the pressure inside the flask? Calculate the density in G/L of CH4(g) at 75 Celsius and 2.1 atm (R= .08206 L*atm/mol*K).
sample containing 4.80 g O2 of gas has a volume of 15.0 L. Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
The electric field at the surface of a charged, solid, copper sphere with radius 0.160m is 3400N/c , directed toward the center of the sphere.
Consider a linear string of five hydrogen atoms, H^5. Determine the net overlap for each molecular orbital and classify it as bonding, nonbonding, or anti-bonding.
The analysis was completed by titrating the excess acid with 11.37 mL of 0.1080 M NaOH. How many of these tablets represent a proper dose for patients whose weight is 100 lb (assume that 1 pound, lb, is 0.45 kg).
What are the odds of finding a particle in a one dimensional box between 0 and L/2, that is L is the length of the box. Assume that the particle is in the second to lowest energy level (n = 2).
is it possible to determine the amount of impurity formed in aspirin with excess sodium salt. aspirin had a melting point range of 113-135 degrees celsius. that is all the information given. any other info can be used.
Describe how you would prepare 500mL of a single solution containing 250mM Tris, 50mM glucose, and 5mM NaCl.
Calculate the average molar bond enthalpy of the carbon-chlorine
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