What is the mass of one mole of beryllium if the atomic mass of beryllium is 9.01?

Md Ariful Islam

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A mole is defined as the amount of a substance whose mass in grams equals the atomic, molecular, or formula-unit mass in units.

Example 1: Water ($"H"_2"O"$) has two hydrogen atoms and one oxygen atom per molecule. The two hydrogen atoms each have an atomic mass of $1.008$, the oxygen atom has an atomic mass of $15.999$, the sum for all three atoms is $18.015$. So a mole of water molecules has a mass of $18.015" g"$.

Example 2: Beryllium has an aromuc mass of $9.01$. So a mole of beryllium atoms has a mass of $9. 01" g"$.

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