(Answered) A 120g sample of dry ice is added to a 755 ml flask

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A 1.20g sample of dry ice is added to a 755 mL flask containing nitrogen gas at a temperature of 25.0 degrees celsius and a pressure of 725 mmHg. The dry ice sublimes (converts from a solid to gas) and the mixture returns to 25.0 degrees celsius. What is the total pressure in the flask?

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