Question

Calculate the formula mass of sodium carbonate dehydrate (Na2CO3 –10H2O)​

Answer 1

Answer:

286

Explanation:

Na₂CO₃.10H₂0

Na = 23

C = 12

O = 16

H = 1

⇒ (23×2)+(12)+(16×3) + 10[(1×2)+16]

⇒ 46 + 12 + 48 + 10(2+16)

⇒ 106 + 10(18)

⇒ 106 + 180

⇒ 286amu

Answer 2

Answer:

(Na2CO3-10H2O)

Explanation:

MOLARE MASS OF (NA2CO3-10H2O)

THEN,

= (22.9)2+12.0+(16.00)3 -10[(1.01)2+16.00]

= 105.9 + 10(18.2)

=286.19 gram/mol

Hence this is ANS

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