How many moles are in 4.3 x 1022 molecules of Na3PO4?

0.071 moles of Na₃PO₄

Explanation:

Given data:

Number of moles of Na₃PO₄ = ?

Number of molecules of Na₃PO₄ = 4.3×10²² molecules

Solution:

1 mole contain 6.022×10²³ molecules

4.3×10²² molecules × 1mol / 6.022×10²³ molecules

0.71×10⁻¹ mol

0.071 mol

The number 6.022 × 10²³ is called Avogadro number.

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

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c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.