Question 737Deck Safety70% to pass
Ambient air, which you normally breathe, contains what percent of oxygen?
AI Explanation
The correct answer is D) 21%.
Ambient air, which is the air we normally breathe, contains approximately 21% oxygen. This is the standard composition of dry air at sea level, as defined by the International Union of Pure and Applied Chemistry (IUPAC) and other regulatory bodies. The other options are incorrect because they do not accurately reflect the typical oxygen content in ambient air.
Related Questions
#735 What can be used to measure the percentage of oxygen inside a chain locker? #736 Deficient oxygen content inside a chain locker can be detected with _______________.#738 After each reading of an oxygen indicator, the instrument should be purged with _______________.#739 When using the oxygen indicator, which reaction from the needle should you expect as a sample is drawn into the instrument? #740 You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?