Diethylamine c2h52nh is a weak base pkb316 at 25oc what is
Diethylamine, (C2H5)2NH, is a weak base (pKb=3.16 at 25oC). What is the pH of 0.155 mol/L (C2H5)2NH(aq) at 25oC? Give your answer accurate to two decimal places.
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What is the net upward force on an airplane wing of area 20.0 m2 if the speed of air flow is 221 m/s across the top of the wing and 206 m/s across the bottom
Given that the ionizable H atoms are associated with carboxyl groups, draw a plausible structure for maleic acid.
Constructing the foundation causes changes in the levels of vertical stress at all points in the soil. One such point lies at the centre of the footing plan and is at a depth of 10m. Determine the increment of vertical stress there.
A weather emergency siren is mounted on a tower, 177 meters above the ground. On one hand, you would like to make the siren very loud so that it will warn as many people as possible. what is the maximum power that the siren can put out
During the recent camping trip, a curious junior engineering student (like yourself) noticed that water is being discharged from a high reservoir to a stream in the valley through a 0.3 m diameter plastic pipe.
A sedimentation basin is used to remove suspended solids from a wastewater. The rate of flow of wastewater into the tank is 10 L/s, and the influent concentration of suspended solids is 200 mg/L.
Use the Gibbs phase rule to find the degrees of freedom for the following systems at equilibrium: a. Liquid water in equilibrium with water vapor. b. Liquid water in equilibrium with humid air.
A planet with mass 7 x 1024 kg orbits a sun with a period of 1 Earth's years. The speed of the planet around that sun is constant and |v|=49600 m/s
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The lab results for the 33-year-old female show significant anemia, characterized by a low red blood cell count (RBC),
By looking just at this diagram, would you predict that ligand binding or signal transduction is more likely to underlie the inability to taste PTC?
The newer dyspareunia drugs are required by the U.S. Food and Drug Administration (FDA) to carry the same risk warnings as
When Sondra went outside at night to empty the trash, a racoon suddenly darted out from behind the trash can. Sondra's heart was pounding
Identify your potential biosecurity concerns in this scenario. What biosecurity practices should be adopted?
Why do so many geneticists focus on studying yeast, fruit flies, nematodes, mice or the small plant Arabidopsis?
Mr. MTA informs you that he doesn't brush his teeth but will use diluted Listerine after eating large meals. What would be the most effective homecare advice