Rays (or N-rays) were a hypothesized form of radiation, described by French physicistProsper-René Blondlot in 1903, and initially confirmed by others, but subsequently found to be illusory.
<u>Answer:</u> The activation energy for backward reaction is +25 kJ
<u>Explanation:</u>
For the given chemical equation:
We are given:
Enthalpy of the reaction = -20 kJ
As, the enthalpy of the reaction is negative, the reaction is said to be exothermic in nature.
To calculate the activation energy for the reverse reaction, we use the equation:
where,
= Activation energy of the forward reaction = 5 kJ
= Activation energy of the backward reaction = ?
= Enthalpy of the reaction = -20 kJ
Putting values in above equation, we get:
Hence, the activation energy for backward reaction is +25 kJ
Answer:
earthquakes yeah i'm pretty sure -
Explanation:
I am pretty sure the answer is periods. Hope it helps. If not what are the answer choices?
No, i do not think the wing lenghth of a plane affects the distance a plane flies.