Answer:
Order zero
Explanation:
Let's consider the decomposition of ammonia to nitrogen and hydrogen on a tungsten filament at 800°C.
2 NH₃(g) → N₂(g) + 3 H₂(g)
The generic rate law is:
rate = k × [NH₃]ⁿ
where,
rate: reaction rate
k: rate constant
n: reaction order
When n = 0, we get:
rate = k × [NH₃]⁰ = k
As we can see, when the reaction order with respect to ammonia is zero, the reaction rate is independent of the concentration of ammonia.
<span>The round trip is 12.5 miles * 2 way = 25 miles. In order to accomplish this in 45 minutes, or 45/60 = 0.75 hours, Tyrone would have to drive at a speed of 25 miles / 0.75 hours = 33.3 miles per hour. If he were to actually be able to drive continuously at this speed without stopping and the prescription pickup were instantaneous, then he would be able to make the round trip in time. However, in the real world this is unlikely to be the case.</span>
Answer:
![-277.6\ \text{kJ/mol}](https://tex.z-dn.net/?f=-277.6%5C%20%5Ctext%7BkJ%2Fmol%7D)
Explanation:
Heat of combustion of
= -1366.8 kJ/mol
Heat of formation of
= -393.5 kJ/mol
Heat of formation of
= -285.8 kJ/mol
The reaction is
![C_2H_5OH(l)\rightarrow 2CO_2(g)+3H_2O(l)](https://tex.z-dn.net/?f=C_2H_5OH%28l%29%5Crightarrow%202CO_2%28g%29%2B3H_2O%28l%29)
Assuming
is the standard enthalpy of formation of ethanol
![-1366.8=2\times (-393.5)+3\times (-285.8)-x\\\Rightarrow x=2\times (-393.5)+3\times (-285.8)+1366.8\\\Rightarrow x=-277.6\ \text{kJ/mol}](https://tex.z-dn.net/?f=-1366.8%3D2%5Ctimes%20%28-393.5%29%2B3%5Ctimes%20%28-285.8%29-x%5C%5C%5CRightarrow%20x%3D2%5Ctimes%20%28-393.5%29%2B3%5Ctimes%20%28-285.8%29%2B1366.8%5C%5C%5CRightarrow%20x%3D-277.6%5C%20%5Ctext%7BkJ%2Fmol%7D)
The standard enthalpy of formation of ethanol is
.
The carbon atom reduced in the transformation of chloromethane to methyllithium.
The reaction between chloromethane and lithium form methyllithium.
→ ![CH_{3} Li+ LiCl](https://tex.z-dn.net/?f=CH_%7B3%7D%20Li%2B%20LiCl)
In above reaction, methyllithium is formed by the dispersing of lithium metal and adding chloromethane .
The carbon atom in chloromethane is partial positive charge because chlorine is high electronegative atom. The carbon atom in methyllithium is partial negative charge because carbon is more electronegative than lithium.
So, in above reaction two lithium metal donate two electron ( each lithium donate one electron) to the carbon atom(having positive charge) of chloromethane and get negative charge in methyllithium .
The gain of electron is reduction. So,The carbon atom reduced in the transformation of chloromethane to methyllithium.
learn about methyllithium
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Answer:
Its good but needs to clash with machines so no more climate change
Explanation: