When 150 litres of a gas enclosed in a vessel maintained a pressure of 1616 my is allowed to expand e 800 litres under constant temperature conditions, what would be it's pressure

When 150 litres of a gas enclosed in a vessel maintained a pressure of

1.	When 150 litres of a gas enclosed in a vessel maintained a pressure of 1616 my is allowed to expand e 800 litres under constant temperature conditions, what would be it's pressure
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