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When silver tarnishes, silver metal reacts with sulfur compounds to form a gray deposit of Ag2S. If Ag reacts with S to form this compound, identify which element is being oxidized and which is being reduced. Explain how you know that this is true. Make sure to describe which atoms are gaining and losing electrons and explain why this happens.
Problem- After 55.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
An acid solution was standardized against NaHCO3 which was prepared as 75 g NaHCO3 in 1 Liter. Find the Normality of the acid if 28 ml was required to decrease pH to 4.5 if volume of NaHCO3 used in titration was 0.1 Liters.
Which of the 5 most common active ingredients is the most effective by mass at neutralizing excess stomach acid
If i leave 750ml of .50 M sodium chloride solution uncovered on a windowsill and 150 ml of the solvent evaporates, what will the new molarity of the sodium chloride solution be
Why does the absolute refractory period occur and What is happening in the cell.
Draw the structure of a compound c5h8o that reacts with phenyl-hydrazine, decolorizes bromine in dichlorometh, and does not give a positive iodoform test
After the solid is completely dissolved, the student adds 20.0 mL of a 0.995 M sodium hydroxide solution. What is the final pOH of the solution in the beaker. Assume volumes are additive.
write the balanced net ionic equation for the reaction that occurs when 0.1 m solutions of copperii sulfate and calcium
Compute the actual free energy of hydrolysis of ATP in human erythrocytes. The standard free energy of hydrolysis of ATP is -30.5 kJ/mol, and the concentrations of ATP
The temperature of the acid solution increases from 24.2 oC to 29.9 oC. Calculate deltaH for the reaction that occurred.
Complete the following reactions and state the dominant mechanism where indicated: (1S,2S)-1-bromo-1,2-diphenylpropane + NaOCH3 Methanol
a 0.573g sample of nonvolatile solute is added to 15.6g of naphthalene and the mixture warmed until melted. the
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