Hand with pen drawing the chemical formula of ammonia

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Size: 5609px × 3419px
Photo credit: © Vladislav Zaretskiy / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abstract, ammonia, azane, chemical, chemistry, concept, draw, drawing, education, element, fertilizer, formula, graphic, illustration, molecular, molecule, nitrogen, object, pattern, research, school, science, scientific, sign, sketch, structure, symbol, text, whiteboard, write