# CHEMISTRY

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• Ohhh!  Hope I don't forget that.
• S8     +   O2    -->      S  O2﻿
• S   =   8 O   =   2
• ___________________
• | | |
• S   =   1 O   =   2
• ﻿And don't forget that if there is no number after an element, it is assumed it will be 1
• The second step is a major rule when balancing equations which is that-- We can only change the coefficients (which are the numbers in from one the atoms) While the numbers after the atoms (subscripts) cannot be changed.
• S8 +      O2    -->      S O2﻿
• COEFFICENTS﻿
• ﻿SUBSCRIPTS
• But for S (sulfur) it's two different subscripts. To fix this we can change the coefficient of the S on the right side and make it into an 8 which means--
• STEP #2 : Changing the Coefficient.
•  S8     +   O2    -->      SO2﻿
• S   =   8 O   =   2
• ___________________
• | | |
• S   =   1 O   =   2
• So if there is no coefficient in front of the element, assume its 1. So as you see there are two O (oxygen) on both sides of the equation-- which is fine.
• S   =   8 O   =   2
•  S8     +   O2    -->      S1O2﻿
• ________________________
• | | |
• S   =   1 O   =   2
• 8
• x  8  =  16
• x  8  =  8
• 8 times the 1 sulfur equals 8. Now both sides have 8 S, but the 8 would also mean that we have to multiply it with the 2 of oxygens which then gives us unbalanced oxygens.--
• S   =   8 O   =   2
• With this, we can change the Coefficient on the left side to 8...  As 8 times 2 would equal 16 Giving us the same amount for both sides for Oxygen and Sulfur.﻿.. Moving on to step 3!
•  S8   +      O2    -->      S1O2﻿
• Okay let me just write that down...
• x  8  =  16
• 8
• ________________________
• | | |
• S   =   1 O   =   2
• 8
• x  8  =  8
• x  8  =  16
• STEP #3 : ONLY CHANGE the Coefficients
• Now that part is easy -squezy!
• We then move on to ONLY CHANGING the coefficients... Not subscripts.
• S8  +      O2    -->      SO2﻿
• S8  +      O2    -->      SO2﻿
• 8
• 8
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