Advanced Science Primary 4 Matter

A sealed container has a volume of 500cm³. It contains 200cm³ of water and 300cm³ of air. If 50cm³ of water is removed from the container without letting any more air in, what will be the final volume of air?

A 350cm³
B 500cm³
C 250cm³
D 300cm³
Show Worked Solution

Worked Solution

Step 1: Total volume of container is 500cm³. Step [2-9]: Final volume of water = 200cm³ - 50cm³ = 150cm³. Step [2-9]: Volume of air = Total volume - Water volume = 500cm³ - 150cm³ = 350cm³.

Correct answer: 350cm³

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