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Chemestry
posted by Peder Friday, April 25, 2014 at 3:01am.
Approximately how many mL of 5% BaCl22H2O solution would be required to precipitate all the
Introduction to graphing
Review Material
Graph terminology
Graphing techniques
Calculating slope and using graphs to interpolate/extrapolate data
Computerized graphing programs
Purpose
Graph data usin
Formal Lab-the analysis of potassium and iron
Review material
Titration curves and equivalent point determination
Solution stoichiometry
Percent determination
Purpose
Titrate the complex with NaOH to
Week 3 Formal Lab
Purpose:
Determine the mass percent potassium and iron in a sample by titration.
Background:
This lab contains beads designed to hold cations, they will hold onto both K+ and H+ but
CHM 161 midterm
Darian Larson
50 points. Please type your answers on the computer and submit a printout on time 10/12/2016.
1. Highlight and discuss ALL of the safety violations in the following scena
Formal lab-Percent of oxalate determination
Review material
redox reactions
solution stoichiometry
Purpose
Determine the percent oxalate in the iron oxalato complex using a redox reaction with potassi
CHM 161 section 201 Tentative Lab Schedule FALL 16
Week 1 (8/24)
Safety and Lab Notebook Format
Week 2 (8/31)
Using Statistics to Analyze Experimental Data
Week 3 (9/7)
Introduction to Graphing
Week 4
Balancing Chemical Equations
Chemical equations: relate the quantities of particles (atoms, molecules, ions) going into
the reaction (the reactants) to make the products
o No matter is lost
o Ex. If 3
Jessica Horstman Practice with conversions
1. You fertilize roses at a rate of 3.1 lbs / 100. square ft. If you used 2.0 lbs of
310lbs
fertilizer on your rose garden, what is the area (in square ft.)
CHM101 Practice Test for Unit 3
The material in unit 3 exam is discussed in sections 8.1-8.3, 15.1, 9.5, 9.1-9.2, 12.112.4 and 13.2 of your textbook. You are also the Types, CuLater and solutions labs
Name Chem 1‘0} Sec
LECTURE RESOURCE
Soluble and Insoluble Salts
Using the table of simpliﬁed solubility rules below, determine which of the following salts are
soluble and draw a line through the form
. '51:. t.:. 1A."_.V1
Name ‘ Chem 101 Sec i
LECTURE RESOURCE
Concentration
Calculations ofsolations
The concentration of a solution is deﬁned as the amount of solute dissolved
in a given amount of
Name CHM 101' Sec
LECTURE RESOURCE
Molar Mass: Converting Moles to
Mass and Mass to Moles
" CALCULATING MOLAR MASS
Molar Mass: Determine the molar mass (to the nearest 0 1 g/mol) for
I each of the f
1. What volume (in mL) will a sample of F2 gas occupy in a syringe at 5.5 atm, if the F2
has a volume of25.0 mL at 1.2 atm?
A) 11 mL
B) 17 mL
3.8 mL
5.5 mL
) 7.6 mL
2. A syringe initially holds a samp
Name
Chapters
Practicing equation balancing
1260
a) _C5H6+E02-)3_H20+_61CO2 Z can“ Kola» (0)7120 t z
b) {i NaI + _ Pb(SO4)2 9 _ PbI4 + ; NaZSO4
c) ZNH3+£foz9LNo-+5Hzo LiNl‘ig'i'Soz‘a LINK) + bib/6
d)
1. Determine the molarity of a solution formed by dissolving .7 g LiBr in enough water to
yield 750.0 mL of solution.
@50 M
) 1.18 M
C) 0.130 M
D) 0.768 M
E) 2.30 M
2. How many molecules of sucrose (C
VOW"
1. Which of the following signs on 61 and w represent a system that is doing work on the
surroundings, as well as gaining heat from the surroundings?
= +, w = - Q0 \ §— *7
) q : ‘5 W 2 +
c) 4 = +