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A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
What is the pH of the equivalence point of the two solutions if you then titrate these solutions separately with the NaOH solution? The Ka for acetic acid is 1.8e-5.
Suppose that you have a 2.0 L sample of hydrogen at 1.00 atm and 59 C. If you heat the sample to 84 C and it expands to a volume of 3.7 L, what will the final pressure be?
Physiological saline solutions used for intravenous injections have a concentration of 0.90% NaCl by weight
Explain why the rates of diffusion of nitrogen gas and carbon monoxide are almost identical at the same temperature.
Choose the answer in which the oxides are arranged in order of increasing acidity (least acidic compound listed first).
A 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the excess acid in the solution required 2.34 mL of 0.01063 M NaOH when t..
A 4.70 g nugget of pure gold absorbed 255 J of heat. What was the final temperature of the gold if the initial temperature was 24.0°C? The specific heat of gold is 0.129 J/(g·°C).
A is allowed to come in contact with substance B. B has a mass of 46.28 grams and its initial temperature is 86.5oC. These two substances reach thermal equilibrium at a temperature of 64.2oC. If the specific heat capacity of substance B is 1.17 J/..
Benozoic Acid has a Ka = 6.3*10^-5. A 35.0mL sample of 0.130 M Benzoic Acid is titrated with 0.150M NaOH solution. Find the pH after 0.0mL NaOH is added.
A 12-liter tank contains helium gas pressurized to 160atm . What size tank would be needed to contain this same amount of helium at atmospheric pressure (1atm )?
2.00 x10^2 mL of .500 M HCl is mixed with 2.00 x 10^2 mL of .250 M Ba(OH)2. how many moles of water are produced in the reaction
Imagine that you have a 6.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
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