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What is the relationship between the vapor pressure of a liquid and its boiling point?
If the mass of copper is 63.5483 Explain what is the percentage of each isotope. Utilize 63.00 and 65.00 at the masses of isotopes
Equal volumes of two strong acids are mixed. The pH of one is 3.80. The pH of the other is 4.80. What is the pH of the mixture
If a gas is placed in a storage tank at pressure of 30.0atm at 20.3 degrees Celsius. As a safety device, a small metal plug in the tank made of a metal alloy that melts at 130 degrees Celsius. If the tank is heated, Explain what is the maximum pre..
Perform a degree-of-freedom analysis for the system and write the equations you would solve to calculate the values of all unknown variables on the flowchart (including the purge fraction).
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell? Make any reasonable assumption that will help you calculate the numbers
A weather balloon has a volume of 750 L when filled with helium at 8 degrees C at a pressure of 380 torr. What is the new volume of the balloon where the pressure is 0.20 atm nd the temperature is -45 degrees C
Problem- A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.27 M KOH solution. The H3O+ concentration after the addition of 80.0 mL of KOH is
A person weighing 85 kg running at 16 km/hr requires 4245 kJ of energy per hour. How far must this person run to consume the energy contained in 0.770 kg of sugar?
Using the entropies at 298 K, the heat capacities of the substances involved, and such other data as are necessary, calculate the standard entropy of reaction (ΔS°) at 1000 K for the reaction:
You have 500.0 mL of a buffer solution containing 0.20 M acetic acid (CH3COOH) and 0.30 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [Ka = 1.8 ´ 10-5]
Barium sulfate is swallowed to enhance xray studies of the gastrointestinal tract. At body temperature, 37 C, the Ksp of BaSO4=1.5E-10 and the Ka of HSO4-= 7.1E-3. In the stomach, the pH is 1.00. Calculate the solubility of barium sulfate in the s..
A potassium bromide solution is 8.34% potassium bromide by mass and its density is 1.03 g/mL. What mass of potassium bromide is contained in 44.8 mL of the solution
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