explain why the two gases travelled along the test tube at different speed
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Explanation:
in the test tube, the two gases will diffuse towards each other. -When the two gases meet inside the test tube they react with one another and form a ring of Ammonium chloride that is white in color. ... This is because hydrogen chloride gas is heavier and diffuses slower than ammonium chloride.
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Answer:
this happens because gas have no mass and do not occupy any space that's why this thing happens
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