Planta química e headphones: o que têm em comum

1. Passo 1. Planta química — utiliza — Sulfuric acid. The first chemical plants produced sulfuric acid and soda.
2. Passo 2. Sulfuric acid — é utilizado em — Lead–acid battery. The electrolyte.
3. Passo 3. Lead–acid battery — evoluiu para — Lithium-ion battery. The lithium-ion battery is the next generation of rechargeable chemical current sources, with higher specific energy.
4. Passo 4. Lithium-ion battery — faz parte de — Wireless earbuds. A battery.
5. Passo 5. Wireless earbuds — evoluiu de — Headphones. Wireless headphones.

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