Chemistry 9701 · AS & A Level · States of matter

States of matter — practice question

The diagram depicts two containers of methane joined by a closed tap. Each container has a volume of $1.00\,\text{m}^3$. Left container: $16\,\text{g}$ methane at $100\,\text{kPa}$. Right container: $96\,\text{g}$ methane at $200\,\text{kPa}$. The tap is opened. The temperature of the system is altered to $800\,\text{K}$. The system then reaches a constant pressure. What pressure does the methane have within the system?

  • A$23.3\,\text{kPa}$
  • B$46.6\,\text{kPa}$
  • C$186\,\text{kPa}$
  • D$372\,\text{kPa}$

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