Download CHEM 101 Dual Enrollment HW2 Question 1 of 16 Rank these

CHEM 101 Dual Enrollment
HW2
Question 1 of 16
Rank these values according to magnitude (Greatest to Least)
4
-6
5
-2
-6
6.4 x 10
9.0 x 10
1.9 x 10
3.5 x 10
7.2 x 10
Question 2 of 16
6
3
Add the following numbers. (2.703 x 10 ) + (7.841 X 10 ) =
Question 3 of 16
Evaluate the following fraction.
3
7
(8.34 x 10 ) (7.17 x 10 )
4
2.65 x 10
Question 4 of 16
Which of the following measurements contain four significant figures?
5000
3957
0.0001
-3
1.000 x 10
4
5.0 x 10
0.0100
Question 5 of 16
Identify the exact numbers in this list. Select all that apply.
4 choices (the number of choices in this list)
3 Ibs (the weight of an object measured on a scale)
56.00 s (a time measured by a stopwatch)
2.54 cm (the number of centimeters in exactly 1 in)
Question 6 of 16
Round each number to two significant figures.
233.356
0.002353
1.005
Question 7 of 16
Give the SI base unit of each of these quantities. Enter the abbreviation rather than the name of the unit.
mass
length
time
Question 8 of 16
Your favorite FM radio station has a wavelength of 3.001 meters. Convert that length to feet using the centimeter to
inch conversion factor.
How many significant figures should there be in your answer? ( 2 3 4 or 5 )
Question 9 of 16
On a recent road trip, it took John 3.0 hours to drive from a suburb of Phoenix to a small town outside of Yuma.
According to his dashboard computer, he averaged 55 miles/hour in the drive. John's friend in Yuma is European
and asked for the distance that John drove in kilometers. How far did John drive (in kilometers)?
Question 10 of 16
Your computer monitor has a width of 14.50 inches and a height of 10.88 inches. What is the area of the monitor
display in square meters?
How many significant figures should there be in your answer? ( 2 3 4 or 5 )
Question 11 of 16
The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate,
how many seconds would it take to swim 0.450 miles? (1 mi = 1609 m.)
Question 12 of 16
If the caffeine concentration in a particular brand of soda is 2.99 mg/oz, drinking how many cans of soda would be
lethal? Assume 10.0 grams of caffeine is a lethal dose, and there are 12 oz in a can.
Question 13 of 16
3
What is the mass, in grams, of a pure iron cube that has a volume of 4.80 cm ?
Question 14 of 16
The buret contains an unknown solution. Use the pictures to determine the density of the solution by reading the
buret volumes and scale masses before and after dispensing the unknown sample.
Before Dispensing (scale says 131.61 g)
After Dispensing (scale says 147.34 g)
Question 15 of 16
A water bath in a physical chemistry lab is 1.65 m long, 0.830 m wide, and 0.600 m deep (high). If it is filled to
within 3.35 inches from the top, how many liters of water are in it?
Question 16 of 16
3
A 3.0717 g piece of aluminum wire with a circular cross-section is 44.32 cm long and has a density of 2.6989 g/cm
Calculate the volume of the wire.
2
What is the cross-sectional area of the wire in cm ?
-3
What is its diameter in mils if 1 mil = 10 inches?