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3. The air today is approximately one-fifth
oxygen. Calculate the approximate volume of
oxygen in 200cm3 of air.

Sagot :

Answer: 40cm^3

Explanation:

Since the The air today is approximately one-fifth oxygen, the approximate volume of oxygen in 200cm3 of air would be:

= 1/5 × 200

= 40cm

The answer is 40cm^3

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