Chem 103 module 1 to 6 exam answers portage learning

Chem 103 Module 1 to 6 Exam answers Portage learning.
MODULE z1 zEXAM
Question z 1
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z z z z z z z z z z z z z z z z z z z z z z z z z z z Click zthis z link z to zaccess z the z Periodic
z Table. z This z may zbe zhelpful z throughout zthe zexam.

1. Convert z845.3 zto zexponential zform zand zexplain zyour zanswer.
2. Convert z 3.21 zx z10-5 z z zto zordinary z form z and z explain z your zanswer.


1. Convert z845.3 z= zlarger zthan z1 z= zpositive zexponent, zmove zdecimal z2
zplaces
= z8.453 z x z102
2. Convert z3.21 zx z 10-5 z z z= z negative z exponent z = z smaller zthan z 1, z move
z decimal z 5 zplaces z= z0.0000321


Question z 2
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z z z z z z z z z z z z z z z z z z z z z z z z z z z Click zthis z link z to zaccess z the z Periodic
z Table. z This z may zbe zhelpful z throughout zthe zexam.




Using zthe zfollowing zinformation, zdo zthe z conversions zshown zbelow, zshowing
zallzwork:

1 zft z= z12 zinches 1 zpound z= z16 zoz 1 zgallon z= z4 zquarts
1 zmile z= z5280 1 zton z= z2000 zpounds 1 zquart z= z2 zpints
zfeet

kilo z(= milli z(= centi z(=
z1000) z 1/1000)zdeci z(= z1/10)
z1/100)




1. 24.6 zgrams z= z? zkg

2. 6.3 zft z= z? zinches


1. z 24.6 zgrams zx z1 zkg z/ z1000 zg z= z0.0246 zkg
2. 6.3 zft zx z12 zin z/ z1 zft z= z75.6 zinches

please zalways zuse zthe zcorrect zunits zin zyour zfinal zanswer

Question z3

,Click zthis z link zto z access z the z Periodic z Table. z This z may zbe z helpful
z throughoutzthe zexam.




Do zthe z conversions z shown z below, zshowing z all z work:
1. 28oC z = z?
zoK z2. 158oF
z = z ? zoC z3.

343oK z = z?
zoF



1. 28oC z + z273 z= z 301 zoK o
C z→ z oK z(make zlarger)
+273
2. 158oF z- z32 z ÷ z 1.8 z = z70 zoC o
F z→ z oC z (make z smaller)
-32 z÷1.8
3. 343oK z- z273 z= z 70 zoC zx z1.8 z + z 32 z= z 158 zoF o
K z→ z oC z→ z oF

Question z 4
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z z z z z z z z z z z z z z z z z z z z z z z z z z z Click zthis z link z to zaccess z the z Periodic
z Table. z This z may zbe zhelpful z throughout zthe zexam.




Be zsure zto zshow zthe zcorrect znumber zof zsignificant zfigures zin zeach
zcalculation.




1. Show zthe zcalculation zof zthe zmass zof za z18.6 zml zsample zof
zfreon zwithzdensity zof z1.49 zg/ml



2. Show zthe zcalculation zof zthe zdensity zof zcrude zoil zif z26.3 zg
zoccupies z30.5zml.



1. M z= zD zx zV z= z1.49 zx z18.6 z= z27.7 zg
2. D z= zM z/ zV z= z26.3 z/ z30.5 z= z0.862 zg/ml


Question z 5
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z z z z z z z z z z z z z z z z z z z z z z z z z z zClick zthis z link z to zaccess z the z Periodic
z Table. z This z may zbe zhelpful z throughout zthe zexam.




1. 3.0600 z contains z ? z significant z figures.

,2. 0.0151 z contains z ? z significant z figures.

, 3. 3.0600 z÷ z0.0151 z= z? z(give zanswer zto zcorrect znumber zof
zsignificant zfigures)



1. 3.0600 z contains z 5 z significant z figures.
2. 0.0151 zcontains z 3 z significant z figures.
3. 3.0600 z÷ z0.0151 z= z202.649 z= z203 z(to z3 zsignificant zfigures zfor z0.0151)


Question z 6
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z z z z z z z z z z z z z z z z z z z z z z z z z z z Click zthis z link z to zaccess z the z Periodic
z Table. z This z may zbe zhelpful z throughout zthe zexam.

Classify zeach zof zthe zfollowing zas zan zelement, zcompound, zsolution zor
zheterogeneous zmixture zand zexplain zyour zanswer.

1. Coca zcola
2. Calcium
3. Chili


1. Coca zcola z- zis znot zon zperiodic ztable z(not zelement) z- zno zelement
znamesz(not zcompound)

appears zto zbe zone zsubstance z= zSolution

2. Calcium z- zis z on zperiodic ztable z= zElement

3. Chili z- zis znot zon zperiodic ztable z(not zelement) z- zno zelement
znames z(notzcompound)

appears z as z more z than z one z substance z (meat, z beans,
sauce) z= zHetero zMix

Question z 7
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z z z z z z z z z z z z z z z z z z z z z z z z z z z Click zthis z link z to zaccess z the z Periodic
z Table. z This z may zbe zhelpful z throughout zthe zexam.




Classify z each z of zthe z following z as z a z chemical z change z or za zphysical z change


1. Charcoal z burns
2. Mixing zcake zbatter zwith zwater