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Nikhil619

  • 3 years ago

Find the no.of water molecules in Epsomite[MgSO4.7 H20]

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  1. Nikhil619
    • 3 years ago
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    @shubhamsrg ?

  2. Peter14
    • 3 years ago
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    in how much epsomite?

  3. Peter14
    • 3 years ago
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    7 water molecules in 1 molecule of epsomite, so 7 moles of water for 1 mole of epsomite.

  4. Nikhil619
    • 3 years ago
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    sry 280 g epsomite..

  5. Peter14
    • 3 years ago
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    find how many moles it is

  6. Nikhil619
    • 3 years ago
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    ok...so number of moles of epsomite times 7?

  7. Nikhil619
    • 3 years ago
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    ok wait...

  8. Nikhil619
    • 3 years ago
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    i got molecular mass as 246 is that right?

  9. Peter14
    • 3 years ago
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    7*18 for the water 1*molar mass of mg 1*molar mass of s 4*molar mass of o look right?

  10. Nikhil619
    • 3 years ago
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    yea...so 280/246 the whole thing times 7?

  11. Peter14
    • 3 years ago
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    yes

  12. Nikhil619
    • 3 years ago
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    ok..so that's the number of molecules or should i multiply by Avogadro's nummber? or multiplying by Avogadro's no. will give me number of atoms?

  13. Peter14
    • 3 years ago
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    then you multiply by avogadro's number to get the number of molecules from the number of moles

  14. Nikhil619
    • 3 years ago
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    ok thnx a lot! :D

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