Lesson: Percent Composition
 Percent Composition Percent Compositiongives the percentage of a substance Percent Compositiongives the percentage of a substancethat is made up of a certain element. For example, For example,the compound SO2 For example,the compound SO2(sulfur dioxide) For example,the compound SO2(sulfur dioxide)has a molar mass of 64.058 For example,the compound SO2Because it has ONE sulfur(sulfur dioxide)has a molar mass of 64.058 For example,the compound SO2Because it has ONE sulfur(sulfur dioxide)has a molar mass of 64.058one sulfur For example,the compound SO2Because it has ONE sulfurwith a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058one sulfur For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfurwith a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058 For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfurwith a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058two oxygen For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfureach with a mass of 16 for a total of 32with a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058two oxygen For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfureach with a mass of 16 for a total of 32with a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058this For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfureach with a mass of 16 for a total of 32with a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058thisplus For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfureach with a mass of 16 for a total of 32with a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058thisplusthis For example,the compound SO2and it has TWO oxygenBecause it has ONE sulfureach with a mass of 16 for a total of 32with a molar mass of 32.06(sulfur dioxide)has a molar mass of 64.058thisplusequals thisthis Find the molar mass of the following elements:CarbonHydrogenNitrogenOxygen12.01?1.01?14.01?16.00? Let's find the molar mass H2O. Let's find the molar mass H2O.First, find the molar mass of H and O Let's find the molar mass H2O.First, find the molar mass of H and OOH16?1.01? Let's find the molar mass H2O.then multiply each molar mass by their subscriptFirst, find the molar mass of H and OOH161.01 Let's find the molar mass H2O.then multiply each molar mass by their subscriptFirst, find the molar mass of H and OOH161.01xx1?2? Let's find the molar mass H2O.then multiply each molar mass by their subscriptFirst, find the molar mass of H and OOH161.01xx12== Let's find the molar mass H2O.then multiply each molar mass by their subscriptfinally, add the productsFirst, find the molar mass of H and OOH161.01xx12==162.02 Let's find the molar mass H2O.then multiply each molar mass by their subscriptfinally, add the productsFirst, find the molar mass of H and O2.02 + 16 =OH161.01xx12==162.02 Let's find the molar mass H2O.then multiply each molar mass by their subscriptfinally, add the productsFirst, find the molar mass of H and O2.02 + 16 =OH161.01xx18.0212==162.02 Let's find the molar mass H2O.then multiply each molar mass by their subscriptfinally, add the productsFirst, find the molar mass of H and O2.02 + 16 =OH161.01xx18.0212==162.02molar mass of H2O Find the molar mass of the following compounds:H2O2NF3PCl4Al2O371.01?172.77?34.04?101.96? To find percent composition To find percent compositionyou find the molar mass first To find percent compositionyou find the molar mass firstSO2 To find percent compositionSOyou find the molar mass firstSO2 To find percent compositionSOyou find the molar mass firstSO232.06?16? To find percent compositionSOyou find the molar mass firstSO232.0616xx To find percent compositionSOyou find the molar mass firstSO232.0616xx1?2? To find percent compositionSOyou find the molar mass firstSO232.0616xx12== To find percent compositionSOyou find the molar mass firstSO232.0616xx12==32.0632 To find percent compositionSOyou find the molar mass firstSO232.0616xx12==32.0632+ To find percent compositionSOyou find the molar mass firstSO232.0616xx12==64.0632.0632+ To find percent compositionSOyou find the molar mass firstSO232.0616xx12==64.0632.0632+molar mass Then divide each element's molar mass by theTo find percent compositiontotal molar massSOyou find the molar mass firstSO232.0616xx12==64.0632.0632+ Then divide each element's molar mass by theTo find percent compositiontotal molar massSOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06 Then divide each element's molar mass by theTo find percent compositiontotal molar massSOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06= .4995?= .5005? Then divide each element's molar mass by theTo find percent compositiontotal molar massSOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06= .4995= .5005 Then divide each element's molar mass by theTo find percent compositiontotal molar mass, then multiply them both by 100SOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06= .4995= .5005 Then divide each element's molar mass by theTo find percent compositiontotal molar mass, then multiply them both by 100SOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06= .4995x100== .5005x100=49.95%?50.05%? Then divide each element's molar mass by theTo find percent compositiontotal molar mass, then multiply them both by 100SOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06So SO2 is= .4995x100== .5005x100=49.95%50.05% Then divide each element's molar mass by theTo find percent compositiontotal molar mass, then multiply them both by 100SOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06So SO2 is50.05% Sulfur= .4995x100== .5005x100=49.95%50.05% Then divide each element's molar mass by theTo find percent compositiontotal molar mass, then multiply them both by 100SOyou find the molar mass firstSO232.0616xx12==64.0632.0632+÷ 64.06÷ 64.06So SO2 is50.05% Sulfurand 49.95% Oxygen= .4995x100== .5005x100=49.95%50.05% Find the percent composition of H2O Find the percent composition of H2OOH Find the percent composition of H2OOH16?1.01? Find the percent composition of H2OOH161.01xx1?2? Find the percent composition of H2OOH161.01xx1 =2 =16?2.02? Find the percent composition of H2OOH161.01xx1 =2 =18.02162.02+ Find the percent composition of H2OOH161.01xx1 =2 =18.02162.02+÷ 18.02 =÷ 18.02 =.8879?.1121? Find the percent composition of H2OOH161.01xx1 =2 =18.02162.02+÷ 18.02 =÷ 18.02 =.8879 x100=.1121 x100=88.79?11.21? Find the percent composition of H2OOH161.0111.2188.79xx1 =2 =18.02162.02% Oxygen?% Hydrogen?+÷ 18.02 =÷ 18.02 =.8879 x100=.1121 x100=88.7911.21 Find the percent composition of NO3. Find the percent composition of NO3.ON Find the percent composition of NO3.ON16?14.01? Find the percent composition of NO3.ON1614.01xx1?3? Find the percent composition of NO3.ON1614.01xx13==48?14.01? Find the percent composition of NO3.ON1614.01xx13==4814.01+ Find the percent composition of NO3.ON1614.01xx13==48 ÷ 62.01 =62.0114.01 ÷ 62.01 =+.7741?.2259? Find the percent composition of NO3.ON1614.01xx13==48 ÷ 62.01 =62.0114.01 ÷ 62.01 =+.7741x100=.2259 x100=77.41?22.59? Find the percent composition of NO3.ON1614.01xx77.41%22.59%13==48 ÷ 62.01 =62.0114.01 ÷ 62.01 =+Oxygen?Nitrogen?.7741x100=.2259 x100=77.4122.59
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