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1. Consider the unbalancedreaction below and answer the questions that follow. (Reduction potentials are Al3+= -1.66 V; Pb2+= -0.126V)
Calculate the standard reduction potential and equilibrium constant for the cell.
Complete and balance each of the following equations for acid-base reactions. Express your answer as a chemical equation. Identify all of the phases in your answer.
What is the temperature of 0.58 mol of gas at a pressure of 1.5 atm and a volume of 12.0 L?
How many grams of Na2SO4 (FM 142.02) should be added to how many grams of sulfuric acid (FM 98.08) to give 1.35 L of buffer with pH 2.80 and a total sulfur (= SO42- + HSO4- + H2SO4) concentration of 0.200 M
A compound is composed of only C, H, and O. The combustion of a 0.519-g sample of the compound yields and 0.255 g of H2O. what is the empirical formula of the compound?
55.0 mL of a 1.70 M solution is diluted to a volume of 288 mL. A 144 mL portion of that solution is diluted using 181 mL of water. What is the final concentration?
A metal crystallizes in the fac e-centered cubic crystal structure with a unit cell edge of 3.80 x 10 -8 cm. The density of the metal is 12.4 g/cc.
Will the recorded temperature change for an exothermic reaction performed in a glass calorimeter be greater or less that that in a styrofoam "coffee cup" calorimeter? Explain. Assume glass to be a better conductor of heat that styrofoam.
How much heat is required to heat 10.0g of ice at -5.00 degree Celsius to become water vapor at 107.00 degree Celsius.
Question- 1) Calculate the pKa value of the acid and determine the number of moles of acid initially present. 2) When the reaction is complete, what is the concentration ratio of conjugate base to acid
from the length of the magnessium ribbon (4.6 cm) and the mass of a metal of magnessium (0.77 g/m) determine the mass of Mg that reacted.
Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide: 4HCL(aq) + MnO2(s) ----> MnCl2(aq) + 2H2O(l) + Cl2(g)
Radium-226 (atomic mass = 226.025402 ) decays to radon-224 (a radioactive gas) with a half-life of 1600 years. What volume of radon gas (at and 1.0 ) is produced by 28.0 of radium in 5.0 days
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