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ACT Aspire Science: Writing Chemical Reaction Equations 0 Views


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Description:

A student is trying to write down the reaction for the lead and potassium switching. Which of the following is the best answer?


Transcript

00:00

Yeah Oh yeah Okay Next Weird science question A student

00:08

is trying to write down the reaction for the lead

00:10

and potassium switching Which of the following is the best

00:13

answer All right Christo One plus one Potassium iodide All

00:19

right well there's a hard one Well this question is

00:21

all about chemicals but there's no need to be a

00:23

chemistry wizard here From the description of the experiment we

00:27

learned that the students used potassium iodide and lead nitrate

00:31

Well the other two choices that involved Crystal one and

00:34

water are not specific enough to this information included in

00:37

the description Right So we could just get rid of

00:40

a and C right off the bat And finally there's

00:43

no reaction that shows that potassium iodide and lead nitrate

00:47

lead to water So it really be like where that

00:51

come from Yeah So the right one is D here

00:55

Potassium iodide plus lead nitrate Lied to potassium nitrate plus

00:59

lead iodide Right The queens that ever not true A

01:02

equals a something like that Well that's it D equals 00:01:05.75 --> [endTime] D here

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