c
ws 1.9 r
Review
riate unit: mm. cm.
blanks wi
Fill in
lll.
km, q. k
1. The average textboo\s 21050- wide and weighs 2OOO.3-.
2. A targe dog can weighb4s0bL and can drink looo dof water per
3.
My TV remote weighs
day.
89:P- and it has a working range of 900 +.
Use your scientific calculator to help solve these (don't forget units and sig figs);
4') 5.90
p3 + 0.050
ffi
= l'-iJ [n"
How many sig fig's?
5
8) 104 g
3
9) 104.01
11) 40. o
2-
12) 140.0 g
,v
14) 4.10
g3
1
5)
g
5600 g
10) 40
I
18) Round
31 ,011
to...
sf: 15, Oe
4 sf: 3\ , Ofr,
7
16)
3 sf:
4
g
-l- 3
13) 0.0140 g
Round off to specified # of sig fig's:
1n, Round 14.989 to...
&o l<m'
5)2100kmx4km=
3 sf:
15.c>
jl ocla
600o
2sf E
2
I
1sf
sf 3l utn
IO
1 sf 3t.>ora
J
Calculate the following, uging appropriate sig figs:
19) What is the volume of a shoebox whose dimensions are 125 cm by 25.5 cm by 30.0 cm?
l25 qn r
LO,5 cvt
x
30.0
qn
= qgO*
arr:
was their average velocity in milhr?
h
20) A runner ran a26.2mile marathon in 4.1t hourqvhat
\
,I
a(r.a rn\
Y.l
6.14 rnr/h.
Y
[,r
Density:
21) Agraduated cylinder is placed on an electronic balance, and the scale reads 81 .19 g.
15.5 mL of acetone are added, and the scale reads 95.33
9t,?!) s 8t.tgJ = \tl.lqj
g. What is the density of acetone?
\\.\\3 u
4' 0'q
lc'
*tL
v'r tt
,l,mL
lb
A^^.tlz I mL
Ans'
22) Mystery object "A" has a density of 3.90 g/mL. lf it weighs 450 g, what
t/ 50
_7= sflo Lrrc=es(v)
v
V= l)5J
iS its
T
volume?
rao s
Forthefollowing: lndicatewhetheritisaDeterminateorlndeterminateerror(Use"D" or"l"):
23)
24)
25)
26)
g
L
Lfi
There was a rock stuck in the bottom of your graduated cylinder
The temperature knob on the hot-plate is off by 10'C
Someone dropped some German potato salad into your experiment
Misunderstanding the instructions, you used hydrochloric acid instead of water.
1fr=12rtni=528Ofi
1b=16o2
(WS 1.9 side 2)
Use Dimensional Analysis to convert the following: (circle your answer)
1
1
39rn*
l<n
l0co fn
gd=4qt
2.*qn
1 in =
1 mi = 1.61
hl
*
I,
bl
1lb=4atg
lm
1 qt = 0.945 L
t(t^
1ffi=100cnr
dtL
!.\t to F M
lat
28) 35
mi
,t'
1 l<m = 1000 m
"\..
1 kg=10OOg
1 L = 100O mL
$tu
tBqC
\--__;"
--->
5:,:l*
Z5 hni >*
t
-\
\t
fr\
:51
lh,
Read the following graduated cylinders:
mL
2e)
ML
30)
3
55
50
Ans 5a.0 r\L
AnsaS!- mL
AnsSgz h L
For the following: lndicate whether is it a Determinate or lndeterminate
error (Use "D" or "1"):
5 Someone drank some of your experiment
gS) O- Your electronic balance is off by 0.4 grams
S+) O You heated the chemicals to 90'C instead of 80'C because you miscopied the instructions
gS) + A fly landed (and dissolved) in your highly acidic experiment
szl
36)
Combine these NFPA
+
codes into one:
37) Convert 0.0093 km into cm:
t*. r
g
tgo cm
glocel
4-9,{lc6.5
38) Convert 1.5 x 105 grams into kg:
1.5
x
L
lD
kg
*** Atl answers are posted on solution guide (on website)
***