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Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Relatively nontoxic and noncombustible. Heavier than air and may asphyxiate by the displacement of air.

At room temperature carbon dioxide is a colourless and odourless gas close gas One of the three states of matter. Gases, like oxygen or helium, do not have a fixed shape and can expand to...

From green to pink hydrogen, we reveal the rainbow of hydrogen colourscolourless gas and the different types of technology used to produce each. Why is a colourless gas given so many colourful terms? Green hydrogen, blue hydrogen, brown hydrogen and even。

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