Chemistry, 26.07.2021 03:50 lily0806

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 2.9-L bulb, then filled it with the gas at 1.30 atm and 29.0 °C and weighed it again. The difference in mass was 4.3 g. Identify the gas.
Express your answer as a chemical formula.
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