Assuming that all of the gas in the tank in the figure is used to fill balloons with an average volume of 2.0 L of helium, approximately how many balloons could be filled at STP? 
Definitions:
Withdrawal
The process of reducing or eliminating the use of a substance after prolonged dependency, often characterized by unpleasant symptoms.
Near-Death Experience
An altered state of consciousness reported after a close brush with death (such as cardiac arrest); often similar to drug-induced hallucinations.
Neural Activity
The electrical and chemical processes that occur within neurons, facilitating the transmission of signals in the nervous system.
Cognitive Development
The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding.
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