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is hydrogen an element

Can an element be separated from a compound? Can an element form a compound?The reaction of zinc metal and hydrochloric acid
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2. asked by Roma
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Hydrogen is a pure substance represented by the chemical symbol H. Which of the following best describes hydrogen?A.Hydrogen is
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2. asked by Jsmzjsmj
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Which element(s) fuse to form new stars?(1 point)Responses Hydrogen Hydrogen Hydrogen and Helium Hydrogen and Helium Hydrogen,
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if hydrogen is the most common element on earth, what makes generating hydrogen expensive and polluting? What is a possible
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if hydrogen is the most common element on earth, what makes generating hydrogen expensive and polluting? What is a possible
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Which of the following element pairs can make a covalent bond?A. Hydrogen and Lithium B. Hydrogen and Magnesium C. Hydrogen and
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2. asked by b
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1ptOne element on Earth is essential for most living things to breathe via respiration or make food via photosynthesis. Identify
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You find a compound composed only of element x and hydrogen,and know that it is 91.33% element x by mass. Each molecule has 2.67
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2. asked by Andrew22
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What is the #1 most abundant element in the Universe?HINT: It has a 3:1 ratio with the #2 element... a Oxygen b Hydrogen c
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2. asked by PJ
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What element(s) MUST be present in a chemical compound to be considered organic? a oxygen and helium b hydrogen, only c nitrogen
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