A. Real gases may be expected to deviate from Charles's law at high pressures.
C. Real gases may be expected to deviate from Charles's law near the liquefaction temperature.
Answer:
0.09 moles of Br₂
Explanation:
Bromine liquid it refers at Br₂ molecule which is liquid at room temperature.
Now to calculate the number of moles we use the following formula:
number of moles = mass (g) / molecular mass (g/mol)
For Br₂ molecule we have:
number of moles = 14.4 / 160 = 0.09 moles of Br₂
Psychology is considered a science because it uses a systematic method of asking and answering questions true or false
It's true
Answer:
B. The student should model a convex lens because it directs light toward the center of the lens.
Explanation:
Lenses are optical devices that work on the principle of refraction.
Refraction is a phenomenon of wave (such as light waves) that occurs when a ray of light crosses the interface between two mediums with different optical density: when this occurs, the ray of light bends and change speed.
In particular, there are two types of lenses:
- Convex lenses: these lenses are curved outward at their center, therefore the rays of light coming from infinite distance (parallel to the axis) are all focused into a point of the lens, called principal focus. Therefore, a convex lens directs lights towards this point.
- Concave lenses: these lenses are curved inward at their center, therefore the rays of light coming from infinite distance are bent away from the principal focus. Therefore, this is a diverging lens, as the rays of light do not converge.
So, the correct answer is
B. The student should model a convex lens because it directs light toward the center of the lens.
