Question
A heliox deep-sea diving mixture contains 2.0 $\mathrm{g}$ of oxygen to every 98.0 $\mathrm{g}$ of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.5 $\mathrm{atm}$ ?
Step 1
The molar mass of oxygen (O2) is 32 g/mol and that of helium (He) is 4 g/mol. Therefore, the number of moles of oxygen is 2 g / 32 g/mol = 0.0625 mol and the number of moles of helium is 98 g / 4 g/mol = 24.5 mol. Show more…
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A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.5 atm?
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