are there more pebbles on brighton beach than atoms in a pebble?

Answer 1

There are more atoms in a pebble than all the pebbles on the South coast of England. You have no idea how small an atom is. Some molecules [which are the building blocks of all material] have many thousands of atoms.

Answer 2

Okay, first let's take a standard pebble made of flint. Flint is primarily silicon dioxide (just like sand). Now let say a pebble has an average mass of 20 grams. The molecular weight of SiO2 is 60 so one pebble is one-third of a mole of SiO2. One mole is 6.10^23 particles. So 20 grams is 2x10^23 molecules. Given that each SiO2 molecule contains 3 atoms we now know that a 20 g flint pebble contains 6x10^23 atoms.

Now we do a simple multiplication to find out how much the same number of pebbles would weigh.

One pebble equals 0.02 kg. Multiply by 6x10^23 and we get:

1.2x10^22 kg of pebbles.

The mass of the Earth is 6x10^24 kg. This would mean that the mass of pebbles calculated is as much a 0.2% of the entire Earth's mass.

Only 500 beaches the obeyed your hypothesis would account for the mass of the world.

Not possible.

QED

Answer 3

I would say more atoms in a pebble.

Answer 4

more atoms in a pebble, I don't know if its true , but years ago I was told if you took a glass of water and poured it into the ocean, if it were distributed evenly, anywhere you scooped out a glass of water, their would be 700 atoms from the original glass

Answer 5

How many pebbles are they ? then i will tell you the answer
to the latter part of your question

Answer 6

i would have to guess no, depends on the seize of the pebble i guess. but generally no

Answer 7

What the doc said is spot on!

Phew - no need to go and count them then

Answer 8

no