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A sample of methane gas has a volume of 10. L at a pressure of 1.5...

A sample of methane gas has a volume of 10. L at a pressure of 1.5 atm and a temperature of 20.0 °C. What is the temperature of the gas in °C if it is expands into 18 L with a pressure of 0.90 atm? Please respond with the correct number of significant figures in scientific notation.

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