Compound Stoichiometry - Mole Concept
Consider a sample of copper(II) sulfate pentahydrate. It's a blue coarse crystalline substance and is sitting on a laboratory balance as shown below. The chemical formula for copper(II) sulfate is CuSO45H2O. Note that
3.9 Solid state Properties: Metals, Metalloids and Non-Metals
Electronegativity provides information on the properties of
elements in the solid state.
Where electronegativity is high, atoms strongly attract e-s
to themselves they are insulators they dont
2.7 The Periodic Table and Electron Configurations
Periodic Table organised by Dimitri Mendeleev
- he organised it according to atomic mass and noticed
the organisation correlated with some of the physical
properties of the elements
Figure 2.7: The classi
Anomalies at group 16
three e-s in the 2p orbitals of nitrogen are unpaired
in the 2s22p4 valence e- configuration of oxygen,
one of the 2p orbitals does contain paired e-s.
The electron-electron repulsion in the oxygen atom
means that its valence electro
Errors and Uncertainties
These occur due to the limitations of the apparatus used or they are predictions due to the accuracy of
the readings taken.
Uncertainties therefore are given a numerical () value and are included
How to Clean Simple Bench Top or Lab Floor Chemical
Spills at Elliott Hall or the K.C. Irving Centre
BEFORE CLEANING ANY SPILL YOU MUST:
A) Determine if this is a major or minor spill:
a. If a major spill, such as:
i. spilling 4 Litres or more
Identify the choice that best completes the statement or answers the question.
1. Given the following probabilities, which event is most likely to occur?
A. P(A) = 0.2
C. P(C) = 0.3
Data Page 1
Values in parentheses
are the masses of the most
stable or best known isotopes for
elements which do not occur naturally.
Based on mass of C12 at 12.00.
Chemistry 1000 Lecture 4:
Kinetics of radioactive decay
Marc R. Roussel
We can detect the radiation produced by a sample and
therefore count the number of decay events.
Example: one beta particle is produced in each beta decay, s
Chemistry 30 Formulas and Information
Q = mct
nH = mct
H = nfH(products)
When to use:
Q = total heat/enthalpy (J or kJ)
m = mass (g)
c = specific heat capacity (J/gC or kJ/gC)
t = temperature change (C
Location, Location, Location! Demonstrating
the Mnemonic Benefit of the Method of Loci
Teaching of Psychology
2015, Vol. 42(2) 169-173
The Author(s) 2015
Reprints and permission:
Moles and Chemical Reactions
We have used the mole concept to calculate mass
relationships in chemical formulas
Molar mass of ethanol (C2H5OH)?
Molar mass = 2 x 12.011 + 6 x 1.008 + 1 x15.999
= 46.069 g/mol
We can also
STOICHIOMETRY: FINAL EXAM PRACTICE
How many moles of carbon dioxide will be produced by the complete reaction of 2.0 mol
of glucose (C6H12O6), according to the following reaction?
C6H12O6 + 6O2 6CO2 + 6H2O
2.0 mol C6H12O6 x
6 mol CO2 = 12.
Principles of Chemistry:
A Molecular Approach,
Chemical quantities and Aqueous reactions
4.2- Reaction Stoichiometry
Stoichiometry is the study of the numerical
relationship between chemical quantit
Undergraduate Research in Chemistry at UTSA
Original research culminating in a comprehensive written report provides an effective means for integrating
undergraduate learning experiences, and allows students to participate directly in the process of scien
ANT 301 Summer 2010
HOMEWORK 2: MICRO AND MACROEVOLUTION
Use your lecture notes and your textbooks to answer the following questions: 1a. Define the four forces of evolutionary change.
1b. Give an example of how each force of evolution could affect
Acids, Bases, and Buffers rev 1/10
The purpose of this experiment is to investigate the pH behavior of several aqueous solutions and to
explore the effect of buffers on this behavior.
Most of the substances we encounter i