A 34.0 L cylinder contains 212 g O2 gas at 27°c.What mass of O2(g) must be released to reduce the pressure to 2.463 atm?

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103 .2 g

108.8 g

100.0 g

32.0 g

answer is A.

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Detailed Solution

p=nVRT=WmVRT w=pmVRT=2.463×32×340.0821×300=108.8g O2 already present =212g Thus, O2 to be released =212−108.8=103.2g

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