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Posted by on Tuesday, February 26, 2008 at 7:36pm.

How do I determine the number of moles for the substance: 3.5 x 10^23 molecules H2O?

  • Chem Urgent! - , Tuesday, February 26, 2008 at 7:54pm

    1 mol of anything has 6.02 x 10^23 molecules of (in this case) H2O. This must be close to a 0.5 mol but you need to do the exact arithmetic.

  • Chem Help Please! - , Tuesday, February 26, 2008 at 8:00pm

    How do I determine the number of grams for the following Substance? 7.8 mol ZnSo4.

  • Chem Help Please! - , Tuesday, February 26, 2008 at 8:41pm

    How do I determine the number of grams for the following Substance? 7.8 mol ZnSo4

  • Chem Urgent! - , Tuesday, February 26, 2008 at 8:09pm

    grams = mols x molar mass

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