Question

calculate formula unit mass of Na2S2O3

Answer 1

Atomic mass of Na = 23u
Atomic mass of S = 32u
Atomic mass of O = 16u

Formula Unit Mass of Na2S2O3 =>2×23+2×32+3×16
=> 46+64+48 = 158 u

Answer 2

Answer:

To Find : Formula unit mass of Na2S2O3

Atomic mass of Na = 23 × 2 = 46u

Atomic mass of S = 32 × 2 = 64u

Atomic mass of O = 16 × 3 = 48u

Therefore, Formula unit mass of Na2S2O3 = 46+64+48 = 158u

Explanation:

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