CHM101
2016, Dr. Miroslav Rezac
NAME: _
CHM 101: Homework #2:
Due:
1. Determine number of significant digit in each number shown below:
# of sig. figs.
0.085
3.082
130.
2.050x10-118
50.40
# of sig. figs
25,000
250.32
0010.00
1.025x10-135
100.00
2. Round
CHM101/ Homework # 5
2006, Dr. Miroslav Rezac
NAME: _
CHM-101
Dr. Miroslav Rezac
Homework # 5
1. For the processes described below indicate the charge of the resulting ion (i.e. +1, -1, etc.)
Atom loses 2 electrons
_
Atom gains 1 electron
_
2. Using the
Michelangelo was considered the greatest living artist in his lifetime, and ever since then he has
been held to be one of the greatest artists of all time. A number of his works in painting, sculpture, and
architecture rank among the most famous in existe
Math 098 Chapter 7 Review
1.
Determine the domain of the following functions.
(a)
2.
2
6x 3
2x
x 7 x 18
(b)
g ( x)
(b)
2 2x
x3 x2
(b)
x 2 x 2 3x 4
x 1 x 2 6x 8
2
Simplify each rational expression.
(a)
3.
f ( x)
x2 9
x 2 3x 18
Multiply or divide as indi
Matter
Determining whether a common material is a pure substance or mixture: You can use the following two
lines of thought to suspect a sample is a mixture. You could suspect something is a pure substance if you
cant justify its a mixture:
1) You can ide
Michel angelo Merisi da Caravaggio
1571 - 1610
Oil on Canvas: 1599-1600
Contarelli Chapel, San Luigi dei Francesi, Rome
This painting along with its companion, the
Martyrdom of St Matthew were the works that first
made Caravaggio's reputation. They were p
Giovanni Lorenzo Bernini (1598-1680)
Giovanni Lorenzo Bernini, a famous Italian architect, sculptor and painter was born in Naples as the
son of the sculptor Pietro Bernini on December 12, 1598. When he was still a child, Giovanni Lorenzo
Bernini was taug
Living with children
now the craziness begins!
Role of children in our society
Cannot understand 21st century behavior without
examining historical role of children
Children not always wanted
-contraception not readily avble/reliable
-mother mortality ra
Danielle Delregno
Assignment 1
First show: Dexter
-Central characters are both male and female
-Both genders are shown to have power
-Males are being shown in their social roles by making a living for the family
-Female characters are not shown in their s
Unit 2 Part2
Chemical
Reactions
1
ChemicalReactions
In a chemical reaction,
Reactant(s)
Product(s)
In this chapter - 4 aspects of chemical reactions (rxs):
(1) Writing balanced equations
(2) types of reactions
(3) mass relationships (stoichiometry)
(4) he
Preparation and Properties of Buffers
Done November8, 2014
Purpose:
The purpose of this lab is to prepare and examine the properties of buffer solutions and to
determine the buffer capacity of a buffer solution.
Procedure:
For part one: 25 ml of .20M acet
The Chemistry of Iron
Done October 25, 2014
Purpose:
For part one of this lab: The purpose is to find the equilibrium constant of the reaction Fe 3+
And SCN- by using the b found from the past lab and by finding the absorbance of the reaction
for this lab
CALCULUS OF A VASE PROJECT
Done October 18, 2014
Physical measurements:
To measure the vase and find points on the vase we used a tape measurement and created a
number line (in centimeters) on our vase starting from the bottom (point 0) and going to the r
CALCULUS OF A VASE PROJECT
Done October 18, 2014
Physical measurements:
To measure the vase and find points on the vase we used a tape measurement and created a
number line (in centimeters) on our vase starting from the bottom (point 0) and going to the r
Determination of Electrochemical Series
Purpose:
The purpose of this lab is to determine the reduction potential of several metals and the
combinations of their half cells.
Procedure:
Using filter paper for a good conductor, copper plus copper sulfate, zi
ACID BASE TITRATION
Done October 31, 2014
Purpose:
The purpose of this lab is to find the concentration of an acid through acid-base titration.
Procedure:
Obtaining a beaker used for titration, 50 ml of distilled water was poured into the beaker and
then
CHM142
Elgin Community College
Memorization Guide
Dr. Trail
Some facts that you need to know for CHM142
CONVERSIONS:
English:
Mass:
16 oz = 1 lb
2000 lb = 1 ton
Length:
12 in = 1 ft
3 ft = 1 yd
Volume:
32 oz = 1 qt
4 qts = 1 gallon
5280 feet = 1 mile
With
CHM142
Dr. Trail
Chapter 3 Worksheet warmup problems
1. Calculate the formula mass for the following
CH4
H2O2
Al2(SO4)3
Mg3N2
2. Calculate the number of objects (atoms, molecules etc.; the respective objects are underlined) in each
of the following:
1g of
CHM142
Elgin Community College
Dr. Trail
Your Name_
Quiz 5a (20 pts) WORK MUST BE SHOWN FOR CREDIT!
E = m c2
E= h
c =
1. (4 pts)
Which one of the following types of radiation has the
shortest wavelength, the greatest energy, and the highest frequency?
a
Dr. Trail
Enthalpy of Hydration Lab Data Sheet
Name _
Salt _
_ mL vol H2O
_ g
salt
H2O
cup
_ g
_ g
_ moles salt
_ C T1
_ C T2
_ C
T
_ g
_ g
cup
mass solution
_ J/g/C specific heat
capacity solution
_ J/g/C specific heat
capacity calorimeter
qsoln
qcal
_ J
HCl
HClO
HClO2
HClO3
HClO4
anion
ClClOClO2ClO3ClO4chlor
hypo chlor
chlor
chlor
per chlor
name
ide
ite
ite
ate
ate
hydro chlor ic acid
hypo chlor ous acid
chlor ous acid
chlor ic acid
per chlor ic acid
ox state
-1
+1
+3
+5
+7
Cl, Br, I, At, and Mn *dont me
CHM142
Elgin Community College
Dr. Trail
Ideal Gas Law Problems
Use the ideal gas law to solve the following problems:
1)
If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what
is the temperature?
2)
If I have an unknown quant
Ac
U
Pu
W
Re
Os
Ru
Ir
Rh
Pt
Pd
Ni
Cu
Zn
Au
Ag
Hg
Cd
Ra
Ta
Tc
Co
Fr
Hf
La
Mo
Fe
Ba
Nb
Mn
Tl
In
Ga
Pb
Sn
Ge
Bi
Sb
As
Po
Te
Se
At
I
Br
Rn
Xe
Kr
Ar
Cs
Zr
Y
Cr
Cl
Sr
V
S
Rb
Ti
Sc
P
Ca
Si
K
Al
Mg
F
Na
N
Ne
C
Li
B
Be
H
Periodic Table of the Elements
O
He
Elgin C
CHM142
Elgin Community College
Dr. Trail
The Ideal and Combined Gas Laws
Use your knowledge of the ideal and combined gas laws to solve the following problems.
1)
If four moles of a gas at a pressure of 5.4 atmospheres have a volume of 120
liters, what is
CHM142
Elgin Community College
Dr. Trail
Charles Law Worksheet
1)
The temperature inside my refrigerator is about 40 Celsius. If I place a balloon in
my fridge that initially has a temperature of 220 C and a volume of 0.5 liters, what
will be the volume o
CHM142
Elgin Community College
Dr. Trail
Boyles Law Problems
Use Boyles Law to answer the following questions:
1)
1.00 L of a gas at standard temperature and pressure is compressed to 473 mL.
What is the new pressure of the gas?
2)
In a thermonuclear devi
Chapter 5 Practice Problems
Q1 Potential and Kinetic Energy.
Calculate the kinetic energy of a 3.1 10-5-g object with a velocity of 2.0 105 cm/s.
Q2 Heat and Work.
Calculate E for each of the following.
a. q = -54. kJ, w = +92. kJ
b. q = +82. kJ, w = +54.
Lab Math Avogadros #
Prelab/Postlab Confusion
Volume has what units?
_
cm3
Area has what units?
_
cm2
a) calculate total volume of one drop
cm
b) Calculate volume of oleic acid in one drop (which is
the amount of oleic acid that appears in the solution)
Q