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Consider a galvanic cell consisting of a magnesium electrode in contact with 1.0 M Mg(NO3)2 and a cadmium electrode in contact with 1.0 M Cd(NO3)2. Calculate Eo for the cell and draw a diagram showing the cathode, anode and direction of electron flow. Write the standard reduction potentials (SRP's) (half reactions) below where Cd(s) SRP is Eo = -0.40 V and Mg(s) SRP is Eo = -2.37V.
Adrenaline is a hormone released in response to physical and mental stress. A solution is prepared with 1.5g of adrenaline in 175g. of CCl4 (Tf= -22.3 degrees celcius and Kf = 29.8 C/m.) The freezing point of the solution was determined experiment..
When 50.0 grams of metal at 75.0 °C is added to 100. grams of water at 15.0 °C, the temperature of the water rises to 18.3 °C. Assume that no heat is lost to the surroundings.
What is the sum of the stoichiometric coefficients the formation reaction for methanol (CH3OH). Enter any fraction as a decimal.
A two-component mixture of volatile liquids was separated by gas chromatography using a 25 meter capillary column. The separation was insufficient with this column to see resolution of both fractions
Calculate the number of liters occupied at STP: a. 1.7 mol H2(g); b. 1.8 x 10-2 mol N2(g); c. 2.5 x 10(2) mol O2(g)
A mixture of 0.10 mol of NO(g), 0.05 mol of H2(g), and 0.10 mol of H2O(g) is placed in a 1.0-L vessel at 300K?
The vapor pressure of water at this temp is 22.4 torr. How many grams of each product were formed and how many grams of 2-heptene and oxygen did you start? R= 0.0820578 L*atm/K*mol.
What mass of Aluminum is produced when 0.5 mole of Al2S3 is completely reduced with excess H2?
unchanged, or less if the residue was washed with hot distilled, deionized water instead of cold distilled deionized water
Determine the grams of sodium carbonate required to precipitate magnesium ions from water used in one wash cycle of a washing machine. Notes: 1) Assume the concentration of Mg+2 is 165mg/L 2) Estimate the volume of water used in your wash cycle 3)..
A cell that uses bromine to oxidize hydrogen H^+ under standard conditions at 298 K has a positive potential.
Nitrogen (80 kPa), oxygen (21.0 kPa), carbon dioxide (0.03 kPa), and water vapor (2.0 kPa) are the usual atmospheric components. What is the total atmospheric pressure in kPa.
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