Which fact explains why a gas fills the whole container in which it is kept?
Answer and explanation
Correct answer: B. Its molecules move freely and are far apart
- Step 1: Gas molecules have negligible attraction and move randomly, so they spread to fill any space. Answer: Its molecules move freely and are far apart. Why not the others: Its molecules are fixed in position, Its molecules attract each other strongly and Its molecules are heavier than liquid molecules don't fit.
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