Question

_____produced hydrogen and carbon dioxide in his laboratory.​

Answer 1

Answer:

metal carbonates+ acid

Explanation:

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Answer 2

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Fossil fuels

Fossil fuels are the dominant source of industrial hydrogen. Carbon dioxide can be separated from natural gas with a 70–85% efficiency for hydrogen production and from other hydrocarbons to varying degrees of efficiency. Specifically, bulk hydrogen is usually produced by the steam reforming of methane or natural gas.