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How do you calculate the number of atoms in 7.50 mol of S?

Answer 1

Owen Ambrose

Mulitiply #7.5*mol# by #"Avogadro's number..........."#

And #"Avogadro's number"#, #6.022xx10^23*mol^-1# specifies a molar quantity......

And so #7.5*molxx6.022xx10^23*mol^-1~=4.5xx10^24# #"sulfur atoms"#. What is the mass of this quantity of sulfur atoms?

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Answer 2

Jose Ayala

To calculate the number of atoms in 7.50 mol of sulfur, you use Avogadro's number, which is 6.022 × 10^23 atoms/mol. Multiply the number of moles by Avogadro's number: (7.50 , \text{mol} \times (6.022 \times 10^{23} , \text{atoms/mol})). This gives approximately (4.52 \times 10^{24}) atoms of sulfur.

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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.