Carbon dioxide is commonly found as a solid (dry ice) or a gas (carbon dioxide gas). Jeff's teacher asked him to draw models to
show the motion of carbon dioxide molecules that make dry ice different from carbon dioxide gas. Describe what was correct and what might be improved about Jeff's models in showing the motion of the carbon dioxide molecules that make dry ice different from carbon dioxide gas
2 answers:
Answer:
An image is given for reference.
Explanation:
- Dry ice is also named as CO 2 and gets its name as it does not melt into a liquid when heated, and instead, it directly changes into a gas by the process of sublimation.
- When energy is being transferred from one state to another the CO 2 gas is pressurized and refrigerated. In terms of molecular motion and kinetic energy, gas molecules can exert pressure and molecules moves in up and down direction.
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Answer : The percentage reduction in intensity is 79.80 %
Explanation :
Using Beer-Lambert's law :
where,
A = absorbance of solution
C = concentration of solution =
l = path length = 2.5 mm = 0.25 cm
= incident light
= transmitted light
= molar absorptivity coefficient =
Now put all the given values in the above formula, we get:
If we consider = 100
then,
Here 'I' intensity of transmitted light = 20.198
Thus, the intensity of absorbed light = 100 - 20.198 = 79.80
Now we have to calculate the percentage reduction in intensity.
Therefore, the percentage reduction in intensity is 79.80 %