How many atoms are in 8.1 moles of oxygen? and how do you know?

4.88 x 10²⁴atoms

Explanation:

Given parameters:

Number of moles of oxygen = 8.1moles

Problem:

To find the number of atoms in 8.1moles of oxygen.

Method in solving the problem:

We know that a mole of a substance contains Avogadro’s number of particles which is 6.02 x 10²³

The particles can be molecules, atoms, etc.

Solution:

From the concept of mole,

Number of atoms =

number of moles x 6.02 x 10²³

Number of atoms = 8.1 x 6.02 x 10²³

Number of

atoms of oxygen = 48.8 x 10²³ atoms

= 4.88 x 10²⁴atoms

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.