In oxyacetylene kits, which tank is used for acetylene and what is its typical volume?

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Multiple Choice

In oxyacetylene kits, which tank is used for acetylene and what is its typical volume?

Explanation:
Acetylene is stored in a compact MC-sized cylinder because acetylene is unstable at high pressure and must be dissolved in porous filler with acetone inside the cylinder to stay safe. This design lets you have a usable amount of gas (about 10 cubic feet) in a smaller, robust container, which is why the acetylene side of an oxyacetylene kit uses the MC acetylene cylinder with roughly 10 ft^3 of gas. Oxygen, on the other hand, is kept in much larger tanks to provide the oxidizer reliably, so those cylinders are bigger than the acetylene one.

Acetylene is stored in a compact MC-sized cylinder because acetylene is unstable at high pressure and must be dissolved in porous filler with acetone inside the cylinder to stay safe. This design lets you have a usable amount of gas (about 10 cubic feet) in a smaller, robust container, which is why the acetylene side of an oxyacetylene kit uses the MC acetylene cylinder with roughly 10 ft^3 of gas. Oxygen, on the other hand, is kept in much larger tanks to provide the oxidizer reliably, so those cylinders are bigger than the acetylene one.

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