Question

How many atoms are there in Marble​

Answer 1

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Well, you obviously aren’t going to get an exact answer here. Marbles are complicated mixes of different atoms. So we can only come up with a ball-park figure - and I’m going to make some wild assumptions to get there!

For a predominantly glass marble, glass is made from sand - which is mostly silicon-dioxide. So let’s simplify and assume it’s a 100% silicon-dioxide sphere. And for ease of the math, let’s assume that a marble has a volume of maybe 2 cubic centimeters…that’s my guess. Silicon dioxide has a density of 2.6 grams per cc. So a marble ought to weigh right around 5 grams.

To calculate the number of silicon-dioxide molecules, we need the “molar mass” - of silicon-dioxide, which Wikipedia helpfully informs me is 60 grams per mole (a “mole” is a certain number of molecules) - so we have around 1/12th of a mole of molecules in our marble.

Scientists know that there are 6x1023 molecules in a mole - so we have about 0.5x1023 molecules in our marble…and since every silicon dioxide molecule has one atom of silicon and two of oxygen, we have a grand total of 1.5x1023 atoms.

That’s 150,000,000,000,000,000,000,000 atoms.

Given the assumptions, guesses and approximations I’ve made, I could easily believe the number would be anywhere between a quarter of that number and four time that number for any particular marble.

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Answer 2

Answer:

Explanation:

Scientists know that there are 6x1023 molecules in a mole - so we have about 0.5x1023 molecules in our marble…and since every silicon dioxide molecule has one atom of silicon and two of oxygen, we have a grand total of 1.5x1023 atoms.

That’s 150,000,000,000,000,000,000,000 atoms.