Answered

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Which chemical is a compound ?
A. Hydrogen
B. Helium
C. Nitrogen
D. Hydrochloric acid

Sagot :

chhawksL67

Answer:

It is D

Explanation:

All A,B, and C are a element so D.

ayummmyysandwich
The answer is D, Hydrochloric acid.


-Hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements.
- Helium is a chemical element with symbol He and atomic number 2.
-Nitrogen is an element, not a compound. It is found in nature as nitrogen gas, also called dinitrogen, with the chemical formula N2 , and makes up 78% of the atmosphere.
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