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A thin plate of copper is suspended in seawater. If the corrosion rate is 0.4 mpy (mils per year) and the plate is a square of dimension 4.0 in. per side, how much weight loss (in mg) is expected in 18 days?
The temperature of the calorimeter plus contents increased from 21.12°C to 29.85°C. What is the heat of combustion per gram of octane? What is the heat of combustion per mole of octane?
The standard Gibbs-free energy of a system is related to its equilibrium constant through the following equation.
Titration of a Weak Acid with a Strong Base, Find the pH before, at, and after equivalence point of 35 ml of 0.15 M lactic acid with 0.18 M NaOH.
When 4.0 g of sulfur is burnt in excess oxygen, 40 KJ of heat is evolved. What is the enthalpy change for the combustion of sulfur?
What hybrid orbital would be expected for the central atom in each of the following: Draw the molecular structure of these compounds and label Ï? and Ï?bonds.
Consider the dissolving of lead iodide: PbI2 (s) ?? Pb2+ (aq) + 2 I- (aq) The solubility of lead iodide (like many salts) increases at higher temperatures: At 20°C, the molar solubility is 1.45 × 10-3M
Write the balanced chemical equation that represents the addition of CL2 to CH3CH=CH2.
Calculate the change in energy deltaE that occurs when 0.5L of liquid water is vaporized
Determine the equilibrium constant for the following reaction at 298 K. SO3(g) + H2O(g) ? H2SO4(l) ?G° = -90.5 kJ
Calculate the entropy change. What would be the value of S if the heating were carried out irreversibly?
Know the reaction catalyzed by catalase. 1.What is the substrate of this enzyme? 2.What are the products? 3.Is catalase found in the cells of the human body?
A constant electric current deposits 0.365 g of silver metal in 12960 seconds from a solution of silver nitrate. What is the current? What is the half reaction for the deposition of silver. Molar mass of Ag is 107.
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