Is rain water heterogeneous or homogeneous?

Answer 1

Rainwater is homogenous if we isolate it to just rainwater.

Filtration alone cannot separate a homogeneous mixture into its constituent parts.

Rainwater as rainwater (rainwater in its purest form) is a homogenous combination.

Rainwater is a mixture that is separated from sporadic particles on the ground. It contains elements that are insoluble, such as phosphates, chlorides, bromides, and other non-water ions.

(As an aside, I've used ion chromatography to identify these ions; I've done this with beer before. :D)

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Answer 2

Noah Aldrich

Rainwater is considered homogeneous because it is a uniform mixture of water droplets and dissolved gases and particles.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.