Follow document for instructions, only Experiment 1. Math Assignment needs to be done, then assignment starts on Part A
Math Assignment
Name Matthew Ramirez CHM100 Section 029LS
1. Solve the following: a) 256 × 0.05 =
b) 2.5 × 100 =
c) d) e)
2. Express the following exponentially: a) 10,000 c) 0.0015
b) 150 d) 0.023
3. Express the following as whole numbers:
a) c)
b) d)
4. If
a) Write an equation for c in terms of a and b
b) Write an equation for b in terms of a and c
5. Given that
a) Find
b) Find
6. Given the following data, fine the average
35.3 35.6 34.9 35.0
7. 2.5 centimeters = 1.00 inches
a) How many centimeters are there in 5.0 inches?
100
b) How many inches are there in 21.0 centimeters?
8. The density is defined as the mass of a substance divided by its volume. Determine the density of
9.0 mL of a liquid with a mass of 13.4 grams.
9. The density of mercury is 13.5 g/mL. Determine the number of grams found in 30.0 mL of mercury?
10. A sample weighing 30.0 grams contains 1.5 grams of salt. Determine the percent salt found in the sample.
11. A sample contains 25% water and weighs 201 grams. Determine the grams of water in thesample.
Experiment 1. Metric System and Measurements
OBJECTIVES:
(a) You will become familiar with the metric system of measurements.
(b) You will make measurements of mass, length, temperature and report you answer to the correct number of significant digits (significant figures). You will become familiar with rules for reporting the correct number of significant digits when adding, multiplying, dividing and subtracting measurements.
(c) You will become familiar with using measuring devices (balances) and different types of glassware.
INTRODUCTION
In chemistry, you will use two types of numbers:
a. Exact numbers and
b. Numbers that result from measurements
Exact numbers
An exact number is a number that arises when you count items or sometimes when you define a unit. For example, there are 20 students in a class. 20 is an exact number because there are exactly 20 students not 20.00001 or 19.9999. Exact numbers have an infinite number of significant digits. or
1 dozen = 12. Twelve in this definition is an exact number, because a dozen is exactly 12, not 11.99999 or 12.00000001 etc. but exactly 12.
Measured Numbers
A measurement is a quantity with a unit.
2 is just an exact number.
2 cm is a measurement of length. It has a number followed by a unit
In this experiment, you will make measurements using the metric system of units. The metric system is a system of units of measurement established from its beginnings in 1874 by diplomatic treaty, to the more modern General Conference on Weights and Measures – CGPM (Conferérence Générale des Poids et Measures). The modern system is actually called the International System of Units or SI. SI is abbreviated from the French Le Système International d’Unités and grew from the original metric system. Today, most people use the name metric and SI interchangeably, with SI being the more correct title.
Blue Red Green Blue Red Green
VioletBlue
www.pearson.com
Please visit us at www.pearson.com for more information.
To order any of our products, contact our customer service
department at (800) 824-7799, or (201) 767-5021 outside of
the U.S., or visit your campus bookstore.
B
A
S
IC
C
H
E
M
IS
T
R
Y
T
im
b
e
rla
k
e
&
T
im
b
e
rla
k
e
Pigments in Our Lives
Whenever you paint a picture or a room, or use inks or cosmetics, you use pigments. A pigment
is a substance that gives a color to another material. Most pigments are a mixture of a powder
and a colorless solvent.
On the front cover of this book, you can see examples of inorganic pigments that are
obtained from powdered minerals of different chemical elements. Cadmium in cadmium orange,
chromium in chrome yellow, cobalt in cobalt violet, iron in red ocher, manganese in manganese
purple. However, the elements chromium and cadmium are toxic and have been replaced by
nontoxic pigments.
Organic pigments containing chains of the element carbon are obtained from plants and
animals. Indigo dye from the plant Indigofera tinctoria is an organic compound with a deep,
blue color used to color blue jeans and fabrics. Carbon black is a powdered form of the element
carbon used to color plastics, tires, inks, and paints.
Color is seen when a pigment absorbs certain wavelengths of visible light and reflects
the remaining wavelengths as a color. For
example, a pigment that absorbs red and
green light, and reflects the blue wavelengths,
has a blue color. If a substance absorbs green
light but relects red and blue wavelengths,
it appears to have a violet color. A leaf
with chlorophyll pigment is green because
all wavelengths in sunlight are absorbed
except green.
Mastering™ Chemistry is a learning platform designed with you
in mind, offering:
• A complete eText! More than a PDF, the Pearson eText includes embedded
videos, interactive self-assessments, and more—all accessible on any device
via the Pearson eText app and available even when offline
• Dynamic Study Modules, a fun, interactive way for you to test your understanding
of the chapter material—available on any device via the Mastering app
• Numerous opportunities to practice your problem-solving skills, with
feedback right when you need it
Sixth
Edition
Timberlake
&
Timberlake
Sixth Edition
ISBN-13: 978-0-13-487811-9
ISBN-10: 0-13-487811-6
E
A
N
P
e
ri
o
d
ic
T
ab
le
o
f
E
le
m
e
n
ts
R
ep
re
se
nt
at
iv
e
el
em
en
ts
1
1
4
T
ra
ns
it
io
n
el
em
en
ts
†A
ct
in
id
es
1
G
ro
up
1A
2
G
ro
up
2A
3 3B
4 4B
5 5B
6 6B
7 7B
8
9 8B
1
0
1
1
1B
1
2
2B
*L
an
th
an
id
es
1
1
1
1
1
2
1 3
4
1
1
1
2
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
3
3
3
4
3
5
3
62
5
6
7
8
9
1
0
1
3
1
4
1
5
1
6
1
7
1
8
3
7
3
8
3
9
4
0
4
1
4
2
4
3
4
4
4
5
4
6
4
7
4
8
4
9
5
0
5
1
5
2
5
3
5
4
8
6
8
5
8
4
8
3
Why Choose Us
- 100% non-plagiarized Papers
- 24/7 /365 Service Available
- Affordable Prices
- Any Paper, Urgency, and Subject
- Will complete your papers in 6 hours
- On-time Delivery
- Money-back and Privacy guarantees
- Unlimited Amendments upon request
- Satisfaction guarantee
How it Works
- Click on the “Place Order” tab at the top menu or “Order Now” icon at the bottom and a new page will appear with an order form to be filled.
- Fill in your paper’s requirements in the "PAPER DETAILS" section.
- Fill in your paper’s academic level, deadline, and the required number of pages from the drop-down menus.
- Click “CREATE ACCOUNT & SIGN IN” to enter your registration details and get an account with us for record-keeping and then, click on “PROCEED TO CHECKOUT” at the bottom of the page.
- From there, the payment sections will show, follow the guided payment process and your order will be available for our writing team to work on it.