Calculate the formula unit mass of 1) Na2o 2) CaCl2 atomic mass of Na=23u , oxygen = 16u , Ca = 40u , Cl = 35u

Dear student,

Formula unit mass of Na₂O = 2 × Atomic mass of Na + Atomic mass of O

= 2 × 23 + 16

= 62 u

Formula unit mass of CaCl₂ = 1 × Atomic mass of Ca  + 2 × Atomic mass of Cl

= 1 × 40  + 2× 35

= 110 u



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