Calculate the formula unit mass of Na2CO3.10H2O. ( Na = 23u, C = 12u, O = 16u, H=1u)
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Answered by
3
Answer:
Formula Unit mass of NaHCO3=
mass of Na + mass of H + mass of C + mass of O
= 23 + 1 + 12 + 3(16)
= 23 + 1 + 12 + 48
= 84 u
Answered by
4
Answer:
Formula unit mass of Na2CO3
= 2×atomic mass of Na+1×atomic mass of C+3×atomic mass of O
=2×22.98+1×12.01+3×16
=105.97u
Formula unit mass of 10H2O=10×atomic mass of H2O
=10×18.02
=180.02u
Formula unit mass of Na2CO3.10H2O=105.97+180.02
=285.99u
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