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Calculate the volume of air that an adult person exhales in an 8 hour day. Assume that each breath has a volume of about 0.5 and that the person exhales 15 times a minute.
Consider the titration of 50.0 mL of 0.0500 M H2NNH2 (a weak base; Kb = 1.30e-06) with 0.100 M HClO4. Calculate the pH after the following volumes of titrant have been added: (a) 0.0 mL pH = (b) 6.3 mL pH = (c) 12.5 mL pH = (d) 18.8 mL pH = (e) 25..
Which of the following involve an increase in the entropy of the system?
Describe your operation, its different components or stages, the materials used and the type of wastes generated. What is your waste management plan and approach for protecting the environment and human health?
What volume will 500 mL of gas at 20°C and a pressure of 420 mm Hg occupy if the temperature is reduced to -80°C and the pressure is increased to 650 mm Hg?
a solution is prepared by dissolving 15.2 g ammonium sulfate in enough water to make 100.0 ml of stock solution. a
KHC8H4O4, was prepared by dissolving 0.4877 g of potassium hydrogen phthalate in about 50 mL of water. Titration with a KOH solution required 18.81 mL to reach a phenolphthalein end point. What is the molarity of the KOH solution
A 2.85 g sample containing only MgO and CuO is placed in a 3.00 L container. The container is filled with CO2 to a pressure of 740 torr at 20 degrees C. After the reaction has gone to completion, the pressure inside the flask is 390 torr at 20 deg..
The initial rates at various substrate concentrations for an enzyme-catalyzed reaction are as follows.
When aluminum metal is dipped in an aqueous solution of hydrochloric acid, hydrogen gas is produced with the formation of an aluminum chloride solution. Write the balanced chemical equation showing the phase of reactants and products.
when alpha-d-xylofuranose is treated with excess methyl iodide in the presence of ag2o how many equivalents of methyl
calculate the values of E, G, and Keq for each of the following reactions at 298k. a) Sn + 2Ag^+ = Sn^2+ + 2Ag b) Cl2 + 2I^- = 2Cl^- +I2
The average concentration of strontium ion in seawater is 8.00 mg of strontium ion per kg of seawater. What is the molarity of the strontium ion if the density of the seawater is 1.025 g/mL.
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