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Problem- Liquid sodium is being considered as an engine coolant. How many grams liquid sodium (minimum) are needed to absorb 9.20 MJ of energy (in form of heat) if the temperature of te sodium is not to increase by more than 10.0'C? Use Cp = 30.7 J/(K x mol) for Na(l) at 500 K.
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Explain when a reactant or product not a solid or pure liquid is added to a chemical system at equilibrium, the system should consume the entire newly-added amount to re-attain equilibrium.
If a sample is composed of 41% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
When determining the effective nuclear charge for a 1s electron, Slater's rules dictate that the other 1s electron must have a value of 0.30 not 0.35. Why?
Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 17?C.
a 0.050m solution of glycerine c3h83 and a 0.050m solution of lycine c5h11no2 are prepared. which solution contains the
Determine the rate law and the value of k for the following reaction using the data provided
Binding energy is sometimes used to hold the substrate in an optimum orientation for the chemistry to occur. E. Binding energy contributes to the decrease in deltaG°'folding for solvent molecules surrounding the enzyme.
If this cell is at standard conditions (Cu2+ and Al3+ solutions 1.0 M and 25 degrees celsius), what is the spontaneous redox reaction and the expected cell potential. Which metal serves as the cathode? Write the half-reaction that occurs at the ca..
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.210 M HClO(aq) with 0.210 M KOH(aq). (a) before addition of any KOH (b) after addition of 25.0 mL of KOH (c) after addition of 40.0 mL of KOH
If the system below is at equilibrium in a closed vessel and a small amount of nitrous acid is added, what would be expected to happen
An electric power station burns 5.0 ´ 105 tons [1 ton = 2000 lbs] of coal annually. Assuming that the coal is 100% carbon, calculate the volume of CO2 emitted at STP by this power plant annually. [1 lb = 453.6 g].
Volume of NaOH dispensed (mL) A) 2 ml B) 2.25 ml C)2.25 ml. Moles of NaOH dispensed. Molar concentration of the acid (moles/L)
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