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Smiling student holding test tube containing liquid in lab at college
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Amazed student watching purple liquid mixing with red in lab at college
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Mature scientist holding liquid in volumetric flask in greenhouse, portrait
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Pest control technician using high pressure spray gun and hose with heavy duty gloves
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Chemical reaction-Pipette 0.5M solution of copper sulfate (CuSO4) into 0.5M solution of sodium carbonate (Na2CO3). Blue copper carbonate precipitate (CuCO3) formed result: CuSO4+Na2CO3->CuCO3+Na2SO4
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Pest control technician using high pressure spray gun and hose with heavy duty gloves
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Close up of scientist viewing a molecular structure in a laboratory
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Attractive smiling student wearing safety glasses in lab in university
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University chemistry laboratory with x-ray fluorescence analyzers and compressed gas cylinder
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Lab assistant with mask looking closely at blue liquid in lab at college
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Chemical lab glassware: burette over beaker, Erlenmeyer flask with stirring rod, graduated cylinder, pipette over test tube
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Student raising her hand in an engineering class while professor is at the white board writing about chemical bonds
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Smiling handsome student in lab coat looking at camera in lab at college
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Flasks and reagent bottles on a laboratory bench with a scientist in the background
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Scientist pointing at sample vials in the laboratory of water treatment plant
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Machine Spraying Blackberry Field, near Kwadendamme, Zeeland, Netherlands
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Scientist working with sample bottles in the laboratory of water treatment plant
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