Fill Balloons With This to Make Them Float
This page is the CodyCross answer for the clue below from New York, New York!, Group 371, Puzzle 5 (Pastrami Sandwich).
Question is: Fill Balloons With This to Make Them Float
and the answer is: HELIUM
Word Meaning:
HELIUM — (uncountable) The second-lightest chemical element (symbol He), with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas.
Definitions from Wiktionary.