How many moles of helium have been, Chemistry

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How many moles of helium have been

A sample of helium is collected by displacing 182 MLK of water. The pressure of the gas and the atmosphere are equalized, using the method described in this experiment. The atmospheric pressure is 738 mmHg. The temperature of the water and that of the gas are identical at 26 Celsius. How many moles of helium have been evolved?

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