Urea acid on blackboard
Molecule structure of urea acid written on blackboard
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Keywords:
acidblackboardboardchalkchalkboardchemicalchemistrycollegecompoundeducationequationexplanationexpressionformulahandwritinghandwrittenlessonmolecularmoleculeorganicschoolscribblestructureuniversityureawhite
Username: Pupunkkop
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Width: 4928 pixels
Height: 3264 pixels
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Image ID: 29402079