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Exam (elaborations)

Cwea Lab Analyst Grade 1 Questions And Answers

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CWEA LAB ANALYST GRADE 1 QUESTIONS AND ANSWERS

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CWEA LAB ANALYST GRADE 1
QUESTIONS AND ANSWERS

Celcius5-5ans-(F-32)5/9

HPC5media5water5bath5-5ans-45`C,53hr

Precision5-5ans-
a5measure5of5how5close5a5series5of5measurements5are5to5one5another

Accuracy5-5ans-how5close5a5measurement5is5to5the5true5value

Electrical5Fire5-5ans-unplug5&5sodium5bicarbonate

analytical5balance5-5ans-
a5device5for5determining5mass5that5gives5highly5accurate5measurements

top5loading5balance5-5ans-
used5to5determine5mass;5not5as5precise5as5an5analytical5balance

triple5beam5balance5-5ans-
instrument5used5to5measure5mass,5less5sensitive5than5top5loading

Coliform5-5ans-Gram-negative5rod-
shaped5bacteria5normally5present5in5the5intestine;5includes5E.5coli5and5other5sp
ecies.

temp5and5pH5-5ans-
temp5rises,5pH5drops.5Must5measure5pH5within5155min5of5collecting5sample

Always5add5___5to5___5-5ans-acid5to5water

spectrometer5-5ans-a5device5that5spreads5light5into5its5different5colors

rounding5off5-5ans-.5=keep5#5even5<.45stays5the5same5>.65round5up

sig5fig5rules5-5ans-Non-zero5digits5are5always5significant.
Any5zeros5between5two5significant5digits5are5significant.
A5final5zero5or5trailing5zeros5in5the5decimal5portion5ONLY5are5significant.

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