You can buy bottled gas to use for cooking.This gas is squeezed into a small space and is sold in containers that are very strong
a Explain why the containers need to be very strong
b Explain why the containers are heavy.​
its chemistry not geography i choose the wrong one!!

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Answer

In order to hold any useful quantity of gas the gas needs to be highly pressurized. It pushes against the sides of the container trying to force it apart so the container has to be very strong. ... Gas cylinders are tested using a liquid - usually water under pressure

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