a. Calculate the density of oxygen, O2, under each of the following conditions:
1.00 atm and 30.0°C:
Express your answers numerically in grams per liter.
b. To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 1.2-L bulb, then filled it with the gas at 1.60atm and 21.0°C and weighed it again. The difference in mass was 2.3g . Identify the gas.
Express your answer as a chemical formula.
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