Answer :
Final answer:
UN# is a United Nations number used to identify hazardous materials, and for Barium Nitrate, it is UN1446.
Explanation:
UN# stands for United Nations number and is used to identify hazardous materials. In the case of Barium Nitrate, the correct UN# is UN1446. This number classifies Barium Nitrate based on its hazardous properties to ensure safety during transportation and handling.
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