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At STP, a container has 1 mole of Ar, 2 ...

At STP, a container has 1 mole of Ar, 2 mole of `CO_(2)`, 3 moles of `O_(2)` and 4 moles of `N_(2)`. Without changing the total pressure if one mole of `O_(2)` is removed, the partial pressure of `O_(2)`

A

is changed by about `26%`

B

in halved

C

in unchanged

D

changes by `30%`

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The correct Answer is:
A
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