A chemist weighs a steel cylinder of compressed oxygen, O2, and finds that it has a mass of 1027.8 g. After some of the oxygen is used in an experiment, the cylinder has a mass of 1023.2 g. How many moles of oxygen gas are used in the experiment? When answering this question include the following: Explain how you found the mass of oxygen gas. Explain how to find the molar mass of the compound. Explain how many significant figures your answer needs to have. The numerical answer

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A chemist weighs a steel cylinder of compressed oxygen, O2,
and finds that it has a mass of 1027.8 g. After some of the
oxygen is used in an experiment, the cylinder has a mass of
1023.2 g. How many moles of oxygen gas are used in the
experiment?
When answering this question include the following:
Explain how you found the mass of oxygen gas.
Explain how to find the molar mass of the compound.
Explain how many significant figures your answer needs to have.
The numerical answer
Transcribed Image Text:A chemist weighs a steel cylinder of compressed oxygen, O2, and finds that it has a mass of 1027.8 g. After some of the oxygen is used in an experiment, the cylinder has a mass of 1023.2 g. How many moles of oxygen gas are used in the experiment? When answering this question include the following: Explain how you found the mass of oxygen gas. Explain how to find the molar mass of the compound. Explain how many significant figures your answer needs to have. The numerical answer
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