Chem 121 Study guides, Class notes & Summaries
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CHEM 121 Lab Report 5: Bonding Type by Solubility, Distillation, and Spectroscopy
- Exam (elaborations) • 10 pages • 2023
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CHEM 121 Lab Report 5: Bonding Type by Solubility, Distillation, and Spectroscopy
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CHEM 121 Lab Report 6: Measuring Kand Shifting Chemical Equilibria
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CHEM 121 Lab Report 6: Measuring Kand Shifting Chemical Equilibria
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CHEM 121 LAB REPORT 1 TO 10 (Equipment, Safety, and Mass/Volume Measurement | Density Determination | Quantitative and Qualitative Analysis | Reaction Chemistry | Bonding Type by Solubility, Distillation, and Spectroscopy | Equilibrium Reactions | Acid Ba
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CHEM 121 LAB REPORT 1 TO 10(Equipment, Safety, and Mass/Volume Measurement | Density Determination | Quantitative and Qualitative Analysis | Reaction Chemistry | Bonding Type by Solubility,
Distillation, and Spectroscopy | Equilibrium Reactions | Acid Base Titrations | Organic Synthesis | Inorganic Synthesis | Urinalysis) - Portage Learning
 





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CHEM 121 Lab Report 9: Inorganic Synthesis
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CHEM 121 Lab Report 9: Inorganic Synthesis
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CHEM 121 Lab Report 7: Acid Base Titrations
- Exam (elaborations) • 5 pages • 2023
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CHEM 121 Lab Report 7: Acid Base Titrations
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CHEM 121 Exam 2 SPRING 2024 Portage learning
- Exam (elaborations) • 39 pages • 2024
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Show the calculation of the molecular weight for the following two compounds, reporting 
your answer to 2 places after the decimal. 
1. Ca3(PO4)2 
2. C9H8NO4Cl 
Your Answer: 
1. 3(40.08)+2(30.97+4(16))=310.18 g/mol Ca3(PO4)2 
2. 9(12.01)+8(1.008)+14.01+4(16)+35.45 = 229.61 g/mol C9H8NO4Cl 
1. 3Ca + 2P + 8O = 310.18 
2. 9C + 8H + N + 4O + Cl = 229.61 
Question 2 
9 / 10 pts 
You may find the following resources helpful: 
Scientific Calculator 
Links to an external site. 
Periodic Table 
Equation ...
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CHEM 121 Exam 1 SPRING 2024 Portage learning
- Exam (elaborations) • 17 pages • 2024
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Complete the two problems below: 
1. Convert 845.3 to exponential form and explain your answer. 
2. Convert 3.21 x 10-5 to ordinary form and explain your answer. 
Your Answer: 
8.453x10^2 - the decimal point was moved two places to the left - the first number was 
8 
.0000321 - the decimal point needed to be moved five spaces to the left. 
1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 
places = 8.453 x 102 
2. Convert 3.21 x 10-5 = negative exponent = smaller than 1, move ...
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CHEM 121 Module 5 exam (Portage learning) SPRING 2024
- Exam (elaborations) • 19 pages • 2024
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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
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CHEM 121 Module 4 exam (Portage learning) SPRING 2024
- Exam (elaborations) • 15 pages • 2024
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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
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CHEM 121 Lab 2 Density SPRING 2024 Portage learning
- Other • 11 pages • 2024
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Experiment #: 2 
Title: Density 
Purpose: To measure the density of some liquids and solids which includes some materials of 
biological interest. 
Procedure: 
1. Dispense 10mL of water using a 10mL pipet into beaker on zeroed scale 
2. Use scale to measure mass of water 
3. Calculate density 
4. Add 5mL of water to beaker using a 5mL pipet 
5. Use scale to measure mass of water 
6. Calculate Density 
7. Add 10mL of water to beaker using a 10mL pipet 
8. Use scale to measure mass of water 
9. Ca...
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