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CHEM 121 Module 4 exam (Portage learning) SPRING 2024
Show the determination of the charge on the ion formed by the Mg12 atom. 
Mg has a +2 charge 
S 2S 2P 3S 
also you can just look at the periodic table and see that it is in collumn 2 on the left side and would 
know that it has a +2 charge because the 2 columns on the left are + this is day 1 chem 101 
knowledge 
12 
2 2 6 2 
Mg (metal = lose electrons) 1s 2s 2p 3s 
lose 2e → Mg 
12 
2 2 6 2 
+2 
Ques 10 / 10 pts tion 2
- Examen
- • 15 páginas •
Show the determination of the charge on the ion formed by the Mg12 atom. 
Mg has a +2 charge 
S 2S 2P 3S 
also you can just look at the periodic table and see that it is in collumn 2 on the left side and would 
know that it has a +2 charge because the 2 columns on the left are + this is day 1 chem 101 
knowledge 
12 
2 2 6 2 
Mg (metal = lose electrons) 1s 2s 2p 3s 
lose 2e → Mg 
12 
2 2 6 2 
+2 
Ques 10 / 10 pts tion 2
CHEM 121 Module 5 exam (Portage learning) SPRING 2024
In the reaction of gaseous N O to yield NO gas and O gas as shown below the following data 
table is obtained: 
2 N O (g) → 4 NO (g) + O (g) 
2 5 2 2 
2 5 2 2 
Your Answer: 
Data Table #2 
Time (sec) [N O ] [O ] 
0 0.300 M 0 
300 0.272 M 0.014 M 
600 0.224 M 0.038 M 
900 0.204 M 0.048 M 
1200 0.186 M 0.057 M 
1800 0.156 M 0.072 M
- Examen
- • 19 páginas •
In the reaction of gaseous N O to yield NO gas and O gas as shown below the following data 
table is obtained: 
2 N O (g) → 4 NO (g) + O (g) 
2 5 2 2 
2 5 2 2 
Your Answer: 
Data Table #2 
Time (sec) [N O ] [O ] 
0 0.300 M 0 
300 0.272 M 0.014 M 
600 0.224 M 0.038 M 
900 0.204 M 0.048 M 
1200 0.186 M 0.057 M 
1800 0.156 M 0.072 M
CHEM 121 Lab 9: Inorganic Synthesis (Portage learning)
Experiment # 9 
Inorganic Synthesis 
Purpose: Inorganic Synthesis of three compounds: Alum, Calcium carbonate, and Zinc Iodide. 
Procedure: 
Alum 
Place 1g of scrap aluminum into a flask. Using a graduated cylinder, measure out and add 50 ml of 
potassium hydroxide. Note reaction. Place under hood and heat on a hot plate. Note color of solution. 
Cool flask in a large beaker of water. Measure 30 ml of sulfuric acid and add to flask. Note precipitation 
formation. Heat solution until precipitatio...
- Otro
- • 4 páginas •
Experiment # 9 
Inorganic Synthesis 
Purpose: Inorganic Synthesis of three compounds: Alum, Calcium carbonate, and Zinc Iodide. 
Procedure: 
Alum 
Place 1g of scrap aluminum into a flask. Using a graduated cylinder, measure out and add 50 ml of 
potassium hydroxide. Note reaction. Place under hood and heat on a hot plate. Note color of solution. 
Cool flask in a large beaker of water. Measure 30 ml of sulfuric acid and add to flask. Note precipitation 
formation. Heat solution until precipitatio...
CHEM 121 Lab 6: Measuring Kc and Shifting Chemical Equilibria (Portage learning)
Experiment # 6 
Measuring Kc and Shifting Chemical Equilibria 
Purpose: To study the equilibrium reaction by 1) determination of the equilibrium constant, Kc. 2) Shift 
equilibrium, Le Chatelier’s principal. 
Procedure: 
A. Measuring Equilibrium Constant 
1) Mix 10ml each of acetic acid and n-propyl alcohol in a small flask. Place 1 ml sample of mixture into a 
beaker using a pipette. Add 25ml of water and several drops of phenolpthalein. Titrate NaOH into 
beaker. Note color changes and stop ...
- Otro
- • 4 páginas •
Experiment # 6 
Measuring Kc and Shifting Chemical Equilibria 
Purpose: To study the equilibrium reaction by 1) determination of the equilibrium constant, Kc. 2) Shift 
equilibrium, Le Chatelier’s principal. 
Procedure: 
A. Measuring Equilibrium Constant 
1) Mix 10ml each of acetic acid and n-propyl alcohol in a small flask. Place 1 ml sample of mixture into a 
beaker using a pipette. Add 25ml of water and several drops of phenolpthalein. Titrate NaOH into 
beaker. Note color changes and stop ...
CHEM 121 Lab 5 Bonding Type by Solubility, Distillation, and Spectroscopy (Portage learning)
Title: Bonding Type by Solubility, Distillation, and Spectroscopy 
Purpose: In this lab, we will study the bonds that form between molecules. We learn about the 
Infrared Spectra and physical properties of molecules to determine what kinds of intramolecular bonds are present within the molecules and what kinds of inter-molecular bonds are 
present between the molecules. 
Procedure: 
There are several different types of bonds – Hydrogen bonds, Polar bonds, and Nonpolar 
substances that form ver...
- Otro
- • 11 páginas •
Title: Bonding Type by Solubility, Distillation, and Spectroscopy 
Purpose: In this lab, we will study the bonds that form between molecules. We learn about the 
Infrared Spectra and physical properties of molecules to determine what kinds of intramolecular bonds are present within the molecules and what kinds of inter-molecular bonds are 
present between the molecules. 
Procedure: 
There are several different types of bonds – Hydrogen bonds, Polar bonds, and Nonpolar 
substances that form ver...
CHEM 121 lab 5 Bonding Type by Solubility, Distillation, and IR Spectroscopy (Portage learning)
Experiment # 5 
Bonding Type by Solubility, Distillation, and IR Spectroscopy 
Purpose: Different methods to identify inter and intramolecular bonding types. 
Procedure: 
A. Solubility 
1) Place sample of KCl into a test tube filled with water. Take note of any layers separating the water 
with the added material. Mix the materials together in the test tube. Note if the mixture is homogenous 
or remains separated. 
2) Repeat the process each for pentane, n-propyl chloride, ethyl alcohol, n-butyl...
- Otro
- • 4 páginas •
Experiment # 5 
Bonding Type by Solubility, Distillation, and IR Spectroscopy 
Purpose: Different methods to identify inter and intramolecular bonding types. 
Procedure: 
A. Solubility 
1) Place sample of KCl into a test tube filled with water. Take note of any layers separating the water 
with the added material. Mix the materials together in the test tube. Note if the mixture is homogenous 
or remains separated. 
2) Repeat the process each for pentane, n-propyl chloride, ethyl alcohol, n-butyl...
CHEM 121 Lab 4 Reaction Chemistry (Portage learning) SPRING
Experiment # 4 
Reaction Chemistry 
Purpose: Review chemistry reactions and their properties 
Procedure: 
I. A. Double Displacement reactions 
1) Fill one test tube with AgNO3 and another tube with HCl. Carefully pour one solution into the other 
tube back and forth to mix solutions. Note the color change. 
2) Repeat the previous steps with one tube of Pb(NO3)2 and KI. 
B. Acid-Base (Double Displacement) Reaction 
1) Take one test tube of HCl and one tube of NaOH and measure each solution. Mix t...
- Otro
- • 3 páginas •
Experiment # 4 
Reaction Chemistry 
Purpose: Review chemistry reactions and their properties 
Procedure: 
I. A. Double Displacement reactions 
1) Fill one test tube with AgNO3 and another tube with HCl. Carefully pour one solution into the other 
tube back and forth to mix solutions. Note the color change. 
2) Repeat the previous steps with one tube of Pb(NO3)2 and KI. 
B. Acid-Base (Double Displacement) Reaction 
1) Take one test tube of HCl and one tube of NaOH and measure each solution. Mix t...
CHEM 121 Lab 3 Quantitative and Qualitative Analysis (Portage learning) SPRING
Experiment # 3 
Quantitative and Qualitative Analysis 
Purpose: Using tools to measure and identify substances. 
Procedure: 
A. Measuring quantity of a substance to identify metal carbonate. 
1) Tare test tube in a beaker and measure out approximately 1.1809 gram of unknown metal carbonate 
into test tube. 
2) Add sulfuric acid to the beaker and mix. Watch reaction for CO2 gas evaporation. 
3) Measure weight of mixture and record the difference. 
4) Use formula to calculate %CO2 in the sample=we...
- Otro
- • 2 páginas •
Experiment # 3 
Quantitative and Qualitative Analysis 
Purpose: Using tools to measure and identify substances. 
Procedure: 
A. Measuring quantity of a substance to identify metal carbonate. 
1) Tare test tube in a beaker and measure out approximately 1.1809 gram of unknown metal carbonate 
into test tube. 
2) Add sulfuric acid to the beaker and mix. Watch reaction for CO2 gas evaporation. 
3) Measure weight of mixture and record the difference. 
4) Use formula to calculate %CO2 in the sample=we...
CHEM 121 Lab 2 Density Determination (Portage learning)
Title: Density Determination 
Purpose: Familiarize methods to obtain densities of different objects. Explore 
accuracy and precision within two different methods of measuring density. 
Procedure: 
Measurement of densities of water at room temperature (21.4 degrees C). 
In order to calculate the density, the volume and mass of the items in each 
experiment were recorded. Note: accepted value of water density at room 
temperature is 0.997904 g/ml. Equipment: balance, pipette, beaker. 
A beaker was...
- Otro
- • 7 páginas •
Title: Density Determination 
Purpose: Familiarize methods to obtain densities of different objects. Explore 
accuracy and precision within two different methods of measuring density. 
Procedure: 
Measurement of densities of water at room temperature (21.4 degrees C). 
In order to calculate the density, the volume and mass of the items in each 
experiment were recorded. Note: accepted value of water density at room 
temperature is 0.997904 g/ml. Equipment: balance, pipette, beaker. 
A beaker was...
CHEM 121 Lab 1 notebook : Equipment, Safety, and Measurement of Mass and Volume (Portage learning)
Experiment #: 1 
Title: Equipment, Safety, and Measurement of Mass and Volume 
Purpose: Introduction to lab equipment and devices, safety equipment and 
procedures, and relative accuracy in mass, volume, and density comparing 
calculated and measured volumes. 
Procedure: 
Equipment Introduction 
 Glass containers: Beakers, flasks, graduated cylinders, pipettes, burettes 
 Burners- Bunsen and Fisher 
 Scoopula, spatula 
 Wire gauze for even heating 
 Ring stands, clamps, and burett...
- Otro
- • 4 páginas •
Experiment #: 1 
Title: Equipment, Safety, and Measurement of Mass and Volume 
Purpose: Introduction to lab equipment and devices, safety equipment and 
procedures, and relative accuracy in mass, volume, and density comparing 
calculated and measured volumes. 
Procedure: 
Equipment Introduction 
 Glass containers: Beakers, flasks, graduated cylinders, pipettes, burettes 
 Burners- Bunsen and Fisher 
 Scoopula, spatula 
 Wire gauze for even heating 
 Ring stands, clamps, and burett...
PHY250L Lab 10 Thermodynamics Straighterline FALL 2023
PHY250L Lab 8 Buoyant Force & Archimedes Principle Straighterline FALL 2023
PHY250L Lab 7 Conservation of Momentum Straighterline FALL 2023
PHY250L Lab 6 Work & Conservation of Energy Straighterline FALL 2023
PHY250L Lab 5 Circular Motion & Gravity Straighterline fall 2023