Calculate the number of atoms of each type in 5.3 gram of sodium carbonate

Number of atoms = number of moles x 6.02 x 10²³

The mole is the number of particles contained in a substance

1 mol = 6.02 x 10²³ particles

mol of Sodium carbonate-Na₂CO₃

MW = 106 g/mol

mass Na

mol Na

number of atoms = 0.1 x 6.02 x 10²³ = 6.02 x 10²²

mass C

mol C

number of atoms = 0.05 x 6.02 x 10²³ = 3.01 x 10²²

mass O

mol O

number of atoms = 0.15 x 6.02 x 10²³ = 9.03 x 10²²

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