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A m^(3) vessel at STP has oxygen gas. Ho...

A `m^(3)` vessel at STP has oxygen gas. How many moles of oxygen are present?

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22.4 at STP = 1mol
`1 m^(3) = 1000L`
Number of moles of oxygen `=1m^(3)xx(1000L)/(1m^(3))xx(1mol)/(22.4L) = (1000)/(22.4) = 44.6`
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