Consider the following reaction at equilibrium. What effect will removing NO2 have on the system?

Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the equation: At 250° 0.125 M PCl5 is added to the flask. If Kc = 1.80, what are the equilibrium concentrations of each gas?

The rate constant for a first-order reaction is 0.54 M-1s-1.  What is the half-life of this reaction if the initial concentration is 0.27 M?

The second-order reaction 2 Mn(CO)5 Mn2(CO)10, has a rate constant equal to 3.0 x 109 M-1 s-1 at 25°C. If the initial concentration of Mn(CO)5 is 2.0 x 10-5 M, how long will it take for 90.% of the reactant to disappear?

40. If an image on a CT scan is radiopaque, what will the image appeal line on a magnetic resonance image.

13. When utilizing a mandibular posterior topographic occlusal projection, what is the approximate vertical angulation?

Consider the following scenario and make predictions as compared to what you know about water and its actual properties. Select T (true) or F (false) for the question after evaluating the given scenario. If the structure of water was changed such that it was suddenly able to form only two hydrogen bonds with other water molecules, you could predict that: The specific heat of water would decrease.

Which of the following is the best explanation for why vegetable oil is a liquid at room temperature while animal fats are solid?

Steroids are considered to be lipids because they

The structures shown in the figure below are