Calculate the number of atoms in each of the following amounts:
1) 3.02 molecules of tin
2) \(2.0 \times 10^6\) molecules of carbon
3) 0.0019 molecules of zirconium
4) \(3.227 \times 10^{-10}\) molecules of potassium
Answer (3)
Avagadro's constant literally is the number of atoms per Mole and = 6.022x10^23 So all you have to do is time each value of moles by the constant and that's your answer :)
To calculate the number of atoms in a given amount, use** Avogadro's number.** For example, 3.02 molecules of tin is equivalent to 3.02 atoms of tin. Similarly, 2.0 × 10^6 molecules of carbon is equivalent to 2.0 × 10^6 atoms of carbon. ;
The number of atoms in each specified amount of molecules is equal to the number of molecules since they are all elements. Therefore: 3.02 atoms of tin, 2.0 × 10^6 atoms of carbon, 0.0019 atoms of zirconium, and 3.227 × 10^{-10} atoms of potassium. Each element's atomic count corresponds directly to the number of molecules provided.
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