What is the number of representative particles in 3.0 mol Sn?

1 Answer
anor277
Mar 13, 2016

There are 3xxN_A" tin atoms" in 3.0 mol of tin metal, where N_A is Avogadro's number, 6.022xx10^23 mol^-1.

Explanation:

If I simply wrote 3xxN_A, I think that would be an acceptable answer. Of course, you'll have to do the multiplication.

So why do we use the number N_A?

N_A has the property that N_A ""^1H atoms have a mass of 1.00 g. N_A ""^12C atoms have a mass of 12.00 g. And N_A Sn atoms has a mass of 118.7 g. What is the mass of your quantity?

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