Consider this gas phase equilibrium system:. PCl5(g) equilibrium arrow PCl3(g) + Cl2
deltaH = +87.8 kJ/mol
Which of these statements are false?
A) increasing the temperature causes the equilibrium constant to increase
B) increasing the system volume shifts the equilibrium to the right
C) increasing the temperature shifts the equilibrium to the right
D) a catalyst speeds up the approach to equilibrium and shifts the position from equilibrium to the right.
E) decreasing the total pressure of the system shifts the equilibrium to the right.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

bcde is the incorrect answer it is a

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.