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Compute the work for a system that absorbs 150 kJ of heat in a process that leads to an increase in internal energy of 120 kJ. Is a work done on or by the system during this change? Explain your reasoning
if wet clothes are hung on the line to dry at 10 degrees fahrenheit on a sunny say in january they will first become
If you have a 750 ml flask that contains 1.235g of C5 H11 NO3 that is heated to 118.5 degrees C what is the pressure inside the flask
Estimate the osmotic pressure of human blood at 37°C. Assume blood is isotonic with a 0.16 M NaCl solution, and assume the van't Hoff factor i is 1.9 for NaCl.
Explain the difference in the answers to question 2 and question 5. Which is the "correct" value for the concentration of the standard NaOH solution? Why?
A balloon filled wit .500 L of air at sea level is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth
Which formula represents the greatest number of isomers?
A solution is prepared by mixing 78.0 mL of 5.00 M HCl and 35.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
What is the pE value in an acid mine water sample having [Fe3+] = 6.79E-3 M and [Fe2+] = 4.14E-4 M?
What is the molarity (M) of the concentrated HClO4 solution?
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
The isomerization of methyl isocyanide, CH3NC ? CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199°C and 12.5 min at 230°C. Calculate the activation energy for this reaction.
When a system is in a state of chemical equilibrium, a state of apparent rest, is anything going on at the molecular
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