Title: At 200 K, the molecules or atoms of an unknown gas, X, have an average velocity equal to that of Ar ... Post by: bdog123 on Mar 21, 2021 At 200 K, the molecules or atoms of an unknown gas, X, have an average velocity equal to that of Ar atoms at 400 K. What is X? (Assume ideal behavior.) ▸ He ▸ CO ▸ HF ▸ HBr ▸ F2 Title: At 200 K, the molecules or atoms of an unknown gas, X, have an average velocity equal to that of Ar Post by: Tiffani372 on Mar 21, 2021 Content hidden
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