Oxygen masks for producing O2 in emergency situations contain potassium superoxide, KO2. It reacts with carbon...

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Answer 1

Answer #1

4KO2 + 2H2O+ 4CO2 $\rightarrow$ 4KHCO3 + 3O2

Amount of CO2 exhaled in 5 minutes = Amount of CO2 exhaled per minute X time = 0.702 gram/minute X 5 minute = 3.51 gram

Number of moles of CO2 = amount of the CO2 /mw of CO2 = 3.51 g/44 g/mole= 0.0798 moles

According to the above balanced equation

4 moles of CO2 produces 3 moles of O2

Therefore 0.0798 moles of CO2 will produce = (3/4) X 0.0798 mole O2 = 0.0599 moles O2

Amount of the O2 produced in 5 minutes = number of moles of the O2 produced X mw of O2

= 0.0599 mole X 32 g/mole = 1.91 g. Answer

Answer 2

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