Use the definition of Avogadro's number to find the average mass of a lithium atom.

Question

Question

science chemistry

Answer 1

Answer #1

Molar mass of lithium = 6.941g/mol

Number of atoms in 1 mol = 6.022x10^23

So, average mass of a lithium atom = 6.941/(6.022x10^23) g

= 1.153 x 10^-23 g

Comment if any problem

Answer 2

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