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Lera25 [3.4K]
3 years ago
15

Why is burning not a physical change?

Chemistry
2 answers:
Lerok [7]3 years ago
4 0
I think it might be the last answer.... Or the second one. Yeah i think it’s the second one
SpyIntel [72]3 years ago
4 0
I think it’s the second one
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Use the question marck Moles of CO2
The the giving = 0.624 mol O2
Find the CF faction = 1 mole=  32.00 of O2

O= 2x16.00= 32.00amu ( writte this in the cf fraction)
SET UP THE CHART
Always start with the giving

0.624 mol O2    /  1mol of CO2
___________  / _____________ = Cancel the queal ( O2)
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Multiply the top and divide by the bottom 
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You should look at the giving number ( how many num u gor ever there) 
Ur answer should have the same # as ur givin so 
= 0.0195 
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