Name:
Ansuftrj^eu
__ Date:
Period:
Chemistry CPA
Scientific Measurement Practice
You must use the formal method of dimensional analysis as taught in this class!!
1.) Convert the following metric units using dimensional analysis. Show all work!!
(?0 >(
a) 5.60 Liters to milliliters
SMOLx
^
! yJO^mL
b) 0.0007 kiloliters to Megaliters
_
O^DOoT-kiY
IyjD^k-^
c) 28.708 centigrams to nanograms
^
^^
JO
J3- .
d) 8.410 decameters to meters
bm X
e) 0.05 milligram to microgram
Sx/O'm^
O.bSmA* jjjiuilf
f.) 2.6 X10® cm^ to m^
Sl.hy^
cm''^
j^lb ^Ctv^ ^
jfYx = 100 cm.
/ m
3 _ /,9f)v I rn x )m. - / OOcm x j00 Cm y !dOC fn.
g.) 480 mm^ to cm^
/
^JTim ^
S.3d km/hnhi
h.) 55.0 meters/sec to km/min
S6oO(y\
X
J/:/r)
^Os
V
Jmiri
g.) 55.0 lbsto grams (Ikj'-zzjh)
S'5.0 ihsX ^ ^ /Yjb^^
o^. 2lbs
jjx<^
h.) 6.50 quarts to gallons
h,50 qis^
/>
I?!"'
Hcfts.
2.) Convert the following numbers to scientific notation.
a) 140000 g
b) 20 L
/<• ¥ X/6
<^ >(){)' ^
c) 0.0009 g
9 %! b~ Q
d) 1mg
) K /O M'
e) 0.7g
9~
f) 45,700m
/0 ~
^^
lid hS
3.) Round the following answers to the correct number of significant figures.
a) 0.0035 cm +1.23cm +1.005 cm =2.2385cm
^C
b) 0.00820 g/0.21 ml =0.039047619 g/ml
0'
c) 2.3 cm X1.35x1.55 cm =4.81275 cm'
^ Jhn L
'j'' ^ CtY)'
d) 570 m + 65 m + 200.0 m = 835.0 m
e) 23.678 mm - 16.3 mm =7.378 mm
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4.) A gas has a density of 7.00 g/L.
a.) What volume in Liters would 5.25 g of this gas occupy?
5/ ^5"^ X /L
7.06^
=
,
/ID' L
b.) Convert the volume from part a to microliters.
?.5/) //o-'ix
^ ^. ,
5.) When a sample of a metal alloy that has a mass of 9.65 g is placed into a graduated
cylinder containing water, the volume reading in the cylinder increases from 16.0 mL to
20.5 mL. What is the density of the alloy?
1/
(;}0>Srr>L ~
6.) Given the following equation: c = Av, solve for A:
C = AV
A - Cy
7.) Given the following equation: E = hv, solve for v:
E= hv
D^ E
h
8.) Atype ofelectromagnetic radiation has a wavelength of545 nm.
a.) Determine the frequency of the radiation.
5H-S nfY\ X
/ y/O ^ Hm
= SASy 10'"^
s
2>,o07^ 10
S.'iS x/0
A.
b.) Determine the energy associated with this radiation.
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0
_/9j
£ nano
10-®
micro
10-6
3.C5Y 10
milli
0.001
centi
0.01
deci
base
deca
hecto
kilo
Mega
0.1
1
10
100
1000
10®