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

Answer 1

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#.

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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Answer 2

Kai Bowman

3.0 mol of tin (Sn) contains ( 3.0 \times 6.022 \times 10^{23} ) representative particles.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.