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Chemistry
1983 Penny Composition: What Metals Are They Made Of?
There is no copper content in a 1983 penny. 1983 pennies are composed of 97.5% zinc and 2.5% copper.
Calculating Oxygen Percentage in Sodium Oxide (Na2O)
Copper vs. Zinc Pennies: How to Identify the Metal
Chemistry
Engineering Heat-Resistant Proteins: Lessons from Ancient Structures
Low‑Cost Catalyst Enables Large‑Scale Seawater Fuel Production
HKU Team Deciphers How E. coli Toxin Drives Cancer Using Synthetic Biology
Science Discoveries
Long-Limbed Geckos Adapted to Narrow Perches, New Research Reveals
Motorless Octopus-Inspired Robotic Arm Achieves Omnidirectional Flexibility
New Geological Mapping Reveals the Ayeyawady Delta’s History
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Enhancing Raw Material Efficiency via Molecular Conveyor Belts
UK Chocolate Technique Sparks Discovery of New Lactose Crystal Form
Eco-Friendly Coatings: Harnessing Nature Through Green Chemistry
High‑Resolution Real‑Space Imaging of Representative Hydrated Proton Structures
Innovative Process Bridges Gap Between Natural and Synthetic Materials
Decoding Enzyme Cascades: The Key to Unlocking Metabolic Pathways
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