Question Completion Status:
[07.03)
The graph below shows the progress of a reversible reaction over time. Which of the following is represented by the green line?
(1 point)
Rate of Forward Reaction
Reaction Rate -
Rate of Reverse Reaction
Time
The reaction has gone to completion.
The system has reached a state of equilibrium.
The concentration of the products equals that of the reactants,
The system is no longer closed and the reaction will no longer occur.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

answer: i dont know the answer but this might

explanation:

l

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.