Recent content by annayn

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    How Do You Calculate Mass Percent of Compounds in a Mixed Sample?

    A sample containing NaCl, Na2SO4, and NaNO3 gives the following elemental analysis: Na:32.8%; O: 36.01%; Cl:19.51%. Calculate the mass percent of each compound in the sample
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    Empirical Formula of Compound: HClO | Solving for Empirical Formula

    A sample of a compound of Cl and O reacts with an excess of H2 to give .233g of HCl and .403g of H2O Determine the empirical formula of the compound Can anyone help explain how to solve this problem? Thanks
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    Can someone help with this problem: Standard enthelpy

    Calculate the standard enthalpy change for the reaction 2C8H18(l)+ 21 O2(g)-->8CO(g)+8CO2(g)+18H2O(l) Given: 2C8H18(l)+25 O2(g)--> 16CO2(g)+18H2O(l) H=-11,020kJ/mol 2CO(g)+ O2(g)-->2CO2(g) H=-566.0kJ/mol I just can't get it to cancel out from the given, to calculate the stardard...
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