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Given the balanced reaction CH4 + 2O2 -> CO2 + 2H2O2 How many moles of oxygen are needed to completely react with 3.4 moles of CH4? 

CHEMISTRY! sorry i clicked math

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snazzychazzy
6.8 is your answer, 1 mole of CH4 reacts with 2 moles of O2

Answer: 6.8 moles of oxygen are needed to completely react with 3.4 moles of [tex]CH_4[/tex]

Explanation:

[tex]CH_4+2O_2\rightarrow CO_2+2H_2O[/tex]

According to reaction, 1 mole of [tex]CH_4[/tex] is reacting with 2 moles of [tex]O_2[/tex] then, 3.4 moles of CH_4 will react with :

[tex]=\frac{2}{1}\times 3.4 \text{moles of }O_2 [/tex] = 6.8 moles of [tex]O_2[/tex]

Hence, 6.8 moles of oxygen are needed to completely react with 3.4 moles of [tex]CH_4[/tex].

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