The notation being as above, we have x + y = w, and 2x + ½y = g ([see page 171]): and,

x = 2g - w, and y = 4w - 2g.
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4. Olefiant gas and carburetted hydrogen.

The notation being as above, we have

5. Carburetted hydrogen, carbonic oxide and hydrogen.

Let x = carburetted hydrogen, y = carbonic oxide, z = the hydrogen, g = the oxygen spent in the combustion of w volumes of mixed gas, and a = the carbonic acid produced.

Then x + y + z = w,
x + ½y + ½z = g,
and 2x + y = a.

whence we have

x = 2g - w,  y = 3a - 2g + w
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