How Dense Are You?
(The Density Project)
1 lab period; work in pairs. Answer the Preparation questions before laboratory.
Proper dress code, safety goggles and Bound lab notebook required.
Goals
To explore the volume-mass relationships of various metal sa
Chapter Objectives
4.1 Types of Chemical Bonds
4.2 Naming Compounds and Writing
Formulas
4.3 Lewis Structures
4.4 Electronegativity, Unequal Sharing,
and Polar Bonds
4.5 Vibrating Bonds and the Greenhouse Effect
4.6 Resonance
4.7 Formal Charge: Cho
Fight the Resistance!
(Conductivity)
1 lab period; work in pairs. Answer the Preparation questions before laboratory.
Proper dress code, safety goggles and Bound lab notebook required.
Goals
To explore the behavior of substances dissolved in water and oth
Into the Line Light!
(Quanta)
1 lab period; work in pairs. Answer the Preparation questions before laboratory.
Proper dress code, safety goggles and Bound lab notebook required.
Goals
To explore the emission spectra of atoms via flame tests
To explore the
Chapter 5 Objectives
5.1 Molecular Shape
5.2 Valence-Shell Electron-Pair Repulsion
Theory (VSEPR)
5.3 Polar Bonds and Polar Molecules
5.4 Valence Bond Theory and Hybrid Orbitals
5.5 Molecules with Multiple Central Atoms
5.6 Chirality and Molecular R
0
I
I
Name 3;]! 93%
CHIOIO Moleculaz'ity
E Tenn 2017 Professor Morgan
Exam 2 - 100 points
June 12, 2017
There are 8 pages in total in the exam, including this one
This is a closed book exam, only a scientic calculator is allowed
For questions requiring c
Chapter 6 Objective
6.1
6.2
6.3
6.4
6.5
London Dispersion Forces
Interactions Involving Polar Molecules
Trends in Solubility
Phase Diagrams
Properties of Water
1
Interactions of Nonpolar
Molecules
Dispersion (London) Forces:
Intermolecular force between
Intermolecular forces (Rate of Evaporation
and Boiling Point of liquids)
1 lab period; work in pairs. Complete the Preparation page before laboratory.
Goals
To relate rate of evaporation to physical forces at the molecular level
To learn a method for meas
Preparation Questions
Name:
Intermolecular forces
(Solubility)
Section:
Read
1. This experiment
2. The appropriate sections of your textbook
Problems
1. Suppose that when two liquids, A and B, are mixed, the total volume after mixing is smaller
than the s
Preparation Questions
Name:
Intermolecular forces
(Rate of Evaporation &
Boiling points)
Section:
Read
1. This experiment
2. The appropriate sections of your textbook
Problems
1. Write Lewis structures of methanol, CH3OH and ethane, CH3 CH3. What intermol
Worksheet 17 Solutions
1. How would a gas differ from a liquid with respect to each of the following
properties:
a. density
b. compressibility
c. ability to mix with other substances of the same phase to form homogeneous
mixtures?
a. a gas is much less de
CH1020
Answers to Worksheet 16
CH1020 Exercises (Worksheet 16)
(Hesss law, standard enthalpy of reactions)
1. State Hesss law. Why is it important to thermochemistry?
If a reaction can be described as a series of steps, H for the reaction is the sum
of th
Worksheet 18 solution Gas law; Applications of gas law: density and molar mass
1. What is the effect of the following on the volume of 1 mol of an ideal gas?
a. The pressure is tripled (at constant T)
Volume decreases to one third the original volume
b. T
CH1020
Answers to Worksheet 15
CH1020 Exercises (Worksheet 15)
(Calorimetry)
1. When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water in
a coffee-cup calorimeter, the temperature rises from 21.6 oC to 37.8 oC. Calculate
H (in kJ/mol
Worksheet 20 Solutions Gas law and Reaction Stoichiometry
1. How many grams of phosphorus react with 35.5 L of O2 at STP to form
tetraphosphorus decoxide?
P4 (s) + 5O2(g) P4O10(s)
(unbalanced)
39.3 g of P4
2. The industrial synthesis of nitric acid involv
CH1020
Answers to Worksheet 14
CH1020 Exercises (Worksheet 14)
(Heat capacity)
1. What is the specific heat of liquid water? What is the heat capacity of 265 g of
liquid water?
Specific heat of water = 4.18 J/g.oC
Heat capacity of 265 g of water = 1.11 kJ
Worksheet 19 Solution Applications of ideal gas law: Partial pressures
1. Define the term partial pressure. State Daltons law of partial pressures.
Partial pressure is the pressure exerted by a single component of a gaseous
mixture at the same temperature
Worksheet 21 Solutions
For some of the questions you will need Kb = 0.512 oC/m and Kf = 5.12oC/m
(for water)
1. Ethanol has a heat of vaporization of 38.56 kJ/mol and a normal boiling point
of 78.4oC. What is the vapor pressure of ethanol at 15oC?
41 torr
Thermodynamics
1
Equipartition of Energy
Molecules in thermal equilibrium have the same
average energy associated with each independent
degree of freedom of their motion and that the
energy per molecule is:
1
kT
2
k is the Boltzman constant.
This expressi
Thermodynamics
Things to know and do
MW of common elements
Common physical constants and
conversion factors
Predict the result of a calculation
Evaluate logarithms and draw graphs
Structure of common chemicals
Cancel units
Communicate
The Equation
Review of the First Law of
Thermodynamics
Review of the First Law of the
movement of heat
The Equation of State
Consider the gas laws:
PV nRT
P = Pressure
R = Gas constant
V = Volume
T = Temperature
N = Number of moles
Units
Pressure
P F / A m a / A kg.m.
Another Review for Thermodynamics
Ideal Gases
PV nRT
PV 1 3 nLmu 2
Rate
u2
1
M
3RT
MW
nM
V
1
Equation of State
Kinetic theory of gases and its result
Gas constant 8.314 JK-1 mol-1
Units, dimensions, canceling units,
the Gas Laws.
Avagadros hypothes
Thermodynamics
www.youtube.com/watch?v=Ut1kGmOhzWQ
1
The Second Law of Thermodynamics
(Engel and Reid, p79 85; McQ. & S. 20 to 20.3)
Its going to happen, happen, happens all the time. (The undertones)
The second law is concerned with explaining the drivin
1.
What is the derivative of volume with respect to radius for a sphere equal to?
i.e. solve
dV
dr
4
V = r3
3
dV
=4 r 2
dr
2. The Otto engine is an early form of internal combustion engine. The engine goes through
four steps that are analogous but not the
Problem Set 4
September 17, 2015
Answers are due at the beginning of class Friday September 25. As usual answer sets received after this time
will not be graded.
Have a great weekend.
1. Given:
H2(g) + O2(g)
H2(g) + O2(g)
OH(g)
H = 38.9 kJ/mol
H2O(g)
H =
1.
It is estimated that in the depths of space the pressure is 1.322 x 10-11 Pa and that the temperature is
2.7 K. On the basis of this information calculate the number of molecules per cubic meter.
11
n=
PV 1.322 10 1
=
= 5.889 x 10-13 moles in one cubic
Problem Set 7
October 8, 2015
Answers are due at the beginning of class Tuesday October 13. Answer sets received after this time will
not be graded. Have a good weekend.
1) A solut
Preparation Questions
Lab 3:Come To Your Cents(es)!
(Copper Cycle)
Name:
Section:
Read
1. Nitric acid Safety Data Sheet posted on canvas
2. This experiment and about copper in your text.
Questions
1. What is the first aid measure in case of nitric acid
Preparation Questions
Lab 6: Colligative properties
Name:
Section:
Read
1. Cyclohexane Safety Data Sheet posted on canvas
2. This experiment and appropriate sections in your text.
Questions
1. What are the risks of inhaling cyclohexane vapors?
2. What