10 March 2015
Investigation 40: Acid Dissociation Constant
Experimental Background and Method:
A small chemical company has accidentally lost the identity of an acid solution and wants
to know what acid it is. In order to determine this, the lab group nee
24 February 24, 2015
Investigation 37: What is the Formation Constant?
Experimental Background & Method
In this lab, a theatre company wants to find the equilibrium constant for the reaction that
results in FeNCS2+, a blood-red solution that can be used a
10 February 2015
Crystal Violet Decolorization
A dye company has hired this research group to determine the feasibility of maintaining
crystal violet color under basic conditions since a batch of the dye was returned to their faci
How Much Copper is in a Coin?
18 November 2014
In this experiment, a copper mining company wants the research group to determine the
amount of copper and zinc in coins older than 1983 and newer than 1984 since U.S.
CHEMISTRY 1710 - Practice Exam #2 -Answers (KATZ)
Section 1 - This section of the exam is multiple choice. Choose the BEST answer
from the choices which are given and write the letter for your choice in the space
provided. All questions are equally weight
Lecture 1 and 2
How manysig. figs. Inthe following numbers:
0.000297008 x 10-7.
Round the number to 4 sig. figs. : 77,450,912.7
7 7 of . I a+
Calculate usingthe correctsig. fi
Write the electron configuration and draw the Lewis Dot Structure for P.
Drawthe Lewis Dot structure forthe ioniccompound Li2S.
Drawthe Lewis Dot structure forthe covalent compound oF
A 3.52g sample of chromium metal reacts with fluorine to produce 7.38g of metal
fluoride. What is the mass % of Cr in the metal fluoride?
=b=:.= u# pr=diffkyaled-er`La
Lecture 3 and 4
Classify each of the following as physical property, physical change,
chemical change, or none. (Use PP, PC, CP, CC in the blanks below)
Digesting food c=c
Experiment #5: Energy Comparison of Fuels
To learn about how fuels differ.
To learn about the origin of fossil fuels.
To learn how energy is measured in calories or joules.
To evaluate and compare the energy content of t
Experiment #6: Ionic Reactions
To study the nature of ionic reactions
To write balanced equations
To write net ionic equations for precipitation reactions
In this lab we will study different reactions to se
1 mole = 6.022 x 1023 of anything
Mole-Number of Atoms Conversions
number of atoms
6.022 x 1023 atoms or
6.022 x 1023 atoms
Atoms and Elements
Dalton's Atomic Theory
Law of the Conservation of Mass
Law of Definite Proportions
Law of Multiple Proportions
Isotopes and Ions
The Periodic Table
Dalton's Atomic Theory
GENERAL CHEMISTRY I
Dr. Pichaya Trakanrungroj
Matter Measurements & Conversions
The Scientific Method
Matter and Matter Classifications
Physical and Chemical Properties of Matter
Chemistry 120 key to PS 3
George 120 Sp 2012
1. Balance the following equations and classify the reaction by type (i.e. decomposition etc.)
combination or synthesis
decomposition or redox
2 FeCl3 +
TITRATION OF VINEGAR WITH NaOH
Titration is an analytical method that can be used to determine the amount of an
unknown present in a sample. Titration is the process of adding a reagent solution of
known concentration (the titrant) to an unknown until all
Chem 130: Exam one Practice Test
1) Which statement about the scientific method is TRUE?
A) The scientific method emphasizes reason as the way to understand the world.
B) The scientific method emphasizes observation and reason as the way to understand t
November 12, 2014
How Much Copper Is in the Coin?
The purpose of this experiment is to determine the amount of copper and zinc in onecent coins minted before 1983 and after 1984. We have been hired by a mining firm to
October 15, 2014
Is it Economical to Recycle Aluminum?
The purpose of this experiment is to determine whether or not it is economically a
good idea to recycle aluminum to make Alum. Our employer is an aluminum recycling
company and t
October 1, 2014
How Much Sodium Bicarbonate is in the Mixture?
The purpose of this experiment is to determine the amount of sodium
bicarbonate in a mixture known to contain sodium chloride. If the mixture contains more
than 90% sodiu
How is Heat of Combustion Measured Indirectly?
The purpose for doing this experiment is to determine the heat of combustion for
Magnesium metal. Since we cannot measure the heat of combustion of magnesium metal
directly we need to
October 23, 2014
How Much Acetic Acid is in Vinegar?
The purpose of this experiment is to determine how much acetic acid is in vinegar. A
company who produces italian salad dressing has requested us to come up with a quality
Chem 130: Exam Two
Wednesday, March 23, 2011
Answer all questions. Each question carries four (4) points (Total points = 100); paper A
1) What is the formula for an ionic compound made of magnesium and sulfur?
E) none of th
Chem 130: Exam one (Practice Test)
Answer all questions. Each question carries equal points (Total points = 100)
1) The correct scientific notation for the number 0.00050210 is:
A) 5.0210 x 104
B) 5.021 x 10-4
C) 5.021 x 104
D) 5.0210 x 10-4
E) none of th