is the ΔS°rxn for the formation of Cu₂O(s) from its elements.
WHAT IS ΔS°rxn FOR THE REACTION ?
The direction of spontaneous change is the direction in which total entropy increases. Total entropy change, also called the entropy change of the universe, is the sum of the entropy change of a system and of its surroundings
Standard entropy change of below reaction (ΔS°
)
∴ ΔH° = - 168.6 KJ/mol
Now, 
![= S^o_{Cu_2 O(s)} - [2 * S^o_{Cu(s)} + \frac{1}{2}(S^o_{O_2(g)}]](https://tex.z-dn.net/?f=%3D%20S%5Eo_%7BCu_2%20O%28s%29%7D%20-%20%5B2%20%2A%20S%5Eo_%7BCu%28s%29%7D%20%2B%20%5Cfrac%7B1%7D%7B2%7D%28S%5Eo_%7BO_2%28g%29%7D%5D)
![= (93.1 J/molK)- [2 * 133.1 + \frac{1}{2}(205.0)]J/molK](https://tex.z-dn.net/?f=%3D%20%2893.1%20J%2FmolK%29-%20%5B2%20%2A%20133.1%20%2B%20%5Cfrac%7B1%7D%7B2%7D%28205.0%29%5DJ%2FmolK)
Thus, -75.6 J/mol K is the ΔS°rxn for the formation.
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According to Avagadros law 1 mole of a substance contains 6.02 × 10^23 particles.
Thus, 1 mole of C6H14 contains 6.02 × 10^ 23 molecules,
Therefore, 9.25 × 10^24 molecules will have;
(9.25 × 10^24)/ (6.02 ×10^23)
= 15.365 moles.
Answer:
Labor unions were created in order to help the workers with work-related difficulties such as low pay, unsafe or unsanitary working conditions, long hours, and other situations. ... Sometimes the unions organized strikes in order to try to change the conditions of the workers.
Explanation:
Answer:
Sample response:
The costs of using both renewable and nonrenewable resources depend on the extent of the use. If renewable resources are managed wisely, the use of the resource will not exceed the rate at which it is replenished. In this instance the cost of using renewable resources can be minimized, if not entirely eliminated. The cost of using nonrenewable resources is harder to minimize because nonrenewable resources cannot be replenished at the rate at which they are used. The environmental impact of using nonrenewable resources such as fossil fuels is greater than just the loss of the resource itself. Other impacts such as acid rain, global warming, and atmospheric pollution can result from the use of nonrenewable resources.
Explanation:
2021 edge
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