Answer:
Vapour pressure of cyclohexane at 50°C is 490torr
Vapour pressure of benzene at 50°C is 90torr
Explanation:
Using Raoult's law, pressure of a solution is defined by the sum of the product sbetween mole fraction of both solvents and pressure of pure solvents.
In the first solution:
<em>(1)</em>
For the second equation:
<em>(2)</em>
Replacing (2) in (1):
-122.5torr = -0.250P°A
<em>Vapour pressure of cyclohexane at 50°C is 490torr</em>
And for benzene:
<em>Vapour pressure of benzene at 50°C is 90torr</em>
The cryosphere is those portions of Earth's surface where water is in solid form, including sea ice, lake ice, river ice, snow cover, glaciers, ice caps, ice sheets, and frozen ground.
Nuclear energy is currently within almost every country becoming a growing source of energy use since it can provide a lot of energy within a short amount of time with little resources used to create it. It is quite possible that within the next few generations that nuclear energy could become a much larger source of energy within the United States. Although, many countries after the leak have resorted to other means of energy sources learning from the mistakes of Japan.
Hope this helps :)
<span>The earths plates move by 'Ridge-Push' and 'Slab Pull'. At constructive plates margins, lava is extruded and new crust forms as the convection pushes the hot magma though and the slab pull is where the dense subducted plate pulls the rest of the plate along. That is the very basics of what happens.
Lamp A - Off - The lava is cold, and therefore does not flow or convect.
Lamp B - On - The lava at the bottom by the light is being heated, as it heats, it gets less dense and rises to the top. When at the top,it cools down, and gets more dense and then falls back to the bottom again. Convection.
The heat source of the lava lamp is the light giving heat energy. The heat source in the earth is the core, and the radioactive processes (Mainly radioactive decay) that occurs within it.
The lava in the lamp represents the earths mantle. The floating pieces are trying to be the earths crustal plates, and they would move over the lava (earths mantle) due to the convection.</span>
Hello Gary!
*Sorry if I'm late*
Your answer is going to be 65.
Element A (which is actually Zinc) has the atomic number of 65. (I remember having got memorize this also).
Pretty much the explanation is that the number of patrons is equivalent to the element's atomic number!
Hope this helps!
Have a nice day :D