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A coffee cup calorimeter having a heat capacity of 451 J/oC was used to measure the heat evolved when 0.0300 mol of NaOH(s) was added to 1000 mL of 0.0300 M HNO3initially at 23.000oC. The temperature of the water rose to 23.639oC. Calculate H (in kJ/mol NaNO3) for this reaction. Assume the specific heat of the final solution is 4.18 J/goC; the density of each solution is 1.00 g/mL; and the addition of solid does not appreciably affect the volume of the solution.
Consider the reaction between sulfite and a metal anion, X2-, to form the metal, X, and thiosulfate:2 X2-(aq) + 2 SO32- + 3 H2O(l) ? 2 X(s) + S2O32- (aq) + 6 OH- for which Eocell = 0.38.
What is its solubility at a partial pressure in air of 0.00021 atm? Assume that CO2 obeys Henry's Law.
It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.5 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
What is the fate of acetyl CoA in the mitochondria in the presence of the following? (a) high ADP levels? (b) high NADH/NAD+ ratio? (c) low levels of oxaloacetate
12.0 moles of gas are in a 8.00 L tank at 23.2 C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
Write the balanced equation for neutralization of sulfuric acid and sodium hydroxide. How many mL of a 0.2 M solution of sodium hydroxide would be required to neutralize
Why we have a decrease in in the volume of the crude organic product during the extraction with HCl. What causes this decrease
when answering include an explanation balanced chemical equations andor calculations where appropriate.in a acid-base
A list of atomic masses of the elements says that the mass of Br is 80 amu. In the mass spectrum of bromobenzene, no significant signal is seen at m/z 157.
Three Introductory Chemistry students each measured 50.0 mL of 1.0 M NaOH into "double-walled" styrofoam cup calorimeters. Then, Sue added 50.0 mL of 1.1 M HCl to her NaOH solution
Treatment of 1-butanol with phosphoric acid (H3PO4) mixed with sodium chloride should result in the formation of 1-chlorobutane. write the mechanism for this reaction.
30 mL of 0.25 M acetic acid are titrated with 0.05 M KOH. What is the pH after addition of 75 mL KOH
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