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    wilsa13's Avatar
    wilsa13 Posts: 1, Reputation: 1
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    #1

    Jun 8, 2011, 05:40 PM
    You analyze a sample of seawater weighting 630 grams.
    You analyze a sample of seawater weighting 630 grams. You find that it contains 22 grams of salt and 608 grams of H2O. What percent of seawater is salt>?
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #2

    Jun 9, 2011, 02:15 PM
    If you want to know the percentage (by mass) of a substance, you divide the mass of the substance in question (salt in this case) by the total mass of the original sample (the seawater), then multiply by 100.


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