How many moles of oxygen must be placed in a 3.00 L container to exert a pressure of 2.00
atm at 25.0°C?
Which variables are given?
Select the correct algebraic form for the equation
to be used for this calculation.
RT
PV
pressure
✓
PV
RT
✓
volume
22
RV
PT
temperature
* moles
COMPLETE
COMPLETE
Solve the problem for the moles of oxygen.
0.2 mol O2
Which variables are unknown?
X pressure
COMPLETE
X volume
X temperature

the answer is 1 i believe

може ли да зареждате повече информация, моля

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.