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FinnZ [79.3K]
3 years ago
15

A balloon contains 5L of oxygen at a pressure of 90 kPa. How much oxygen will the ballon contain if the pressure is lowered to 6

7 kPa.
Chemistry
2 answers:
timurjin [86]3 years ago
8 0

did you ever get the answer?

VLD [36.1K]3 years ago
3 0
We have that all (ideal) gases obey the fundamental gas equation: PV=nRT where P is the Pressure, V is the Volume, n is the number of moles, R is a universal constant and T is the temperature in Kelvin. In this process, we have that both the number of moles and the temperature stays the same. So if we denote by i the initial conditions and by f the final conditions of the gas, we have:P_{i} * V_{i}=nRT= P{f}*V{f} . Hence, if we solve for the final Volume we get: V_{f} = \frac {V_{i}*P_{i} }{P_{f}} . Now we know all the other variables; substituting we get that the final volume is 6.7 L (6.716 L ).
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It is also not a representation of a compound to show its atoms' arrangement: this would be a Lewis dot structure, or a ball and stick model, or something similar. We don't use the empirical formula for this purpose.

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