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ACT Science 2.3 Research Summary Passage 187 Views


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ACT Science: Research Summary Passage Drill 2, Problem 3. Why is the salt left behind in the distillation chamber after boiling?

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Transcript

00:03

And we're getting shmoopy with it...again.

00:06

Who said there would be no reading on a science exam?

00:08

Pause and review to your heart's content...

00:23

Why is the salt left behind in the distillation chamber after boiling?

00:29

And here are the potential answers...

00:33

What do we need to know to answer this fine question?

00:36

Hmm...well, it looks like a 'read the passage to find the answer' type question.

00:41

So... where does it say anything about salt being left behind in the distillation chamber?

00:46

Well... it says that "The reason that the solute is left in the distillation chamber

00:51

after the water is boiled away is that the solute and the water

00:56

possess different boiling points."

00:58

That... pretty much answers our question.

00:59

So, apparently, the solute is left in the chamber because the

01:02

solute and water possess different boiling points.

01:06

Wait...what's a solute again?

01:08

Yeah, no...it's not that gesture of respect. No.

01:11

A solute is the smaller component of a solution... the part that's dissolved into the solvent.

01:17

So in this case, the solute is the salt.

01:20

Looks like B is our answer -- the solute, or salt,

01:23

and the water have different boiling points.

01:25

As do the test administrators if they catch you

01:27

looking at the test of the person sitting next to you...

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