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:
Killing
The act of causing death deliberately or due to negligence.
Large
Referring to something of significant size, volume, or extent, larger than most others of the same category.
Megalo-
A prefix derived from Greek, meaning 'large' or 'great', used in medical and scientific terms.
Excessive
An amount, level, or degree of something that exceeds what is normal, necessary, or reasonable, often leading to negative consequences.
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