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Consider the following balanced equation for the precipitation reaction that occurs in aqueous solution. Pb(NO3)2(aq)+2KI(aq)→PbI2(s)+2KNO3(aq) Answer the following questions if 0.50 L of 0.40 M Pb(NO3)2 is mixed with 0.50 L of 0.40 M KI: How many moles of PbI2 can form based upon complete reaction of Pb(NO3)2 and KI ? What mass of the precipitate (the solid product) should be expected to form in this reaction? (What is the theoretical yield of PbI2?)
Calculate the potential E for the following cell: Fe(s)| Fe(NO3)2 (0.050M || Cu(NO3)2 (0.020 M) | Cu(s) Cell reaction: Cu+2 + Fes ? Cus + Fe+2 Fe+2 + 2e- ? Fe(S) Eo = -0.44 V Cu+2 + 2e- ? Cu(s) Eo = 0.339V
Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s)+H2SO4(aq) 2HCl(g)+Na2SO4(s) How many grams of HCl can be prepared from 2.00 mol H2SO4 and 150g NaCl.
Mixed in a constant-pressure calorimeter, the temperature of the mixture rose from 21.15 to 26.00. If the density of the solution is 1.0g/mL and its specific heat is 4.18J/g C, how much heat is evolved by this reaction in kJ
Which of the following would be most efficient for melting snow from side walks and roads: sucrose, lithium chloride, propylene glycol, potassium phosphate, or calcium chloride. Explain why and include any environmental impact.
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
Explain the first ionization energy for rubidium is +403.0 kJ/mol. Explain how much energy would be necessary to convert 17.1 g of gaseous rubidium to its gaseous +1 monatomic ion at constant temperature
If 155mL of wet {grm{H}}_2 is collected over water at 24 ^circ {rm C} and a barometric pressure of 739torr , how many grams of {grm Zn} have been consumed.
You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. counts after 35.2 minutes, what is the half-life of this substance
What is the freezing point of a 0.19 m Solution of glucose C6H12O6 in water. (Kf for water is 1.858 degrees C/m)
calulate the molarity of acetic acid in a venegar sample knowing that 5.00mL of vinegar requires 43.50mL of 0.105 M NaOH to reach the phenolphthalein endpoint in a titration
The dream finally became reality when it was shown that mercury-198 can be converted into gold-198 on bombardment by neutrons. A. What small particle is produced in addition to gold-198? B. Write a balanced nuclear equation for the reaction.
Some AgCl(s) has been placed in a beaker of water. After some time, the solubility of Ag+ and Cl- was measured to be 2.5 x 10-5 M. Using Calculations, determine whether the system has reached equilibrium.
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