The industrial ammonia synthesis has been found to proceed by the dissociation of molecular nitrogen into atoms before hydrogenation takes place. Construct two potential diagrams in which one involves an activation barrier for the turnover from a molecular adsorption state into a dissociated state and the other does not. Discuss the influence of increasing temperature for both possibilities.

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.