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BUNDLED CHEM 121 LAB EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024
BUNDLED CHEM 121 LAB EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024
[Show more]BUNDLED CHEM 121 LAB EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024
[Show more]CHEM 121 LAB FINAL EXAM QUESTIONS WITH ALL POSSIBLE SOLUTIONS ANSWERED 2024/2025 
 
When using the Tare function on a balance, start by (1). Then (2) to cancel out that mass. Finally, (3) and record the mass of your sample. 
1) Placing the glassware on the balance 
2) Press the Tare/Zero button 
3) ...
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Add to cartCHEM 121 LAB FINAL EXAM QUESTIONS WITH ALL POSSIBLE SOLUTIONS ANSWERED 2024/2025 
 
When using the Tare function on a balance, start by (1). Then (2) to cancel out that mass. Finally, (3) and record the mass of your sample. 
1) Placing the glassware on the balance 
2) Press the Tare/Zero button 
3) ...
CHEM 121 LAB PRACTICAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ 
Density 
Mass/Volume 
Percent Substance 
(Mass of Substance/Mass of Sample)*100 
Number of Moles 
Grams/Molar mass 
Percent Error 
([Theoretical Value-Experimental Value]/Theoretical Value)*100 
Percent Yield 
(Experim...
Preview 1 out of 4 pages
Add to cartCHEM 121 LAB PRACTICAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ 
Density 
Mass/Volume 
Percent Substance 
(Mass of Substance/Mass of Sample)*100 
Number of Moles 
Grams/Molar mass 
Percent Error 
([Theoretical Value-Experimental Value]/Theoretical Value)*100 
Percent Yield 
(Experim...
CHEM 121 LAB TECHNIQUES EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ 2024/2025 
 
After what seconds is the number on balance considered stable? 
reading is considered stable if it persists for 2 seconds 
Top-Loading Balance 
- pre-weighing samples, not precise 
- +/- 0.1g o...
Preview 2 out of 9 pages
Add to cartCHEM 121 LAB TECHNIQUES EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ 2024/2025 
 
After what seconds is the number on balance considered stable? 
reading is considered stable if it persists for 2 seconds 
Top-Loading Balance 
- pre-weighing samples, not precise 
- +/- 0.1g o...
CHEM 121 LAB FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED AND GRADED A+ ALREADY PASSED 
 
Which method of analysis generally is the fastest method, gravimetric or volumetric? 
Volumetric 
The label on plant food reads 25-20-17. What does this mean? 
25% nitrogen 
20% phosphorus 
17% potassi...
Preview 1 out of 4 pages
Add to cartCHEM 121 LAB FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED AND GRADED A+ ALREADY PASSED 
 
Which method of analysis generally is the fastest method, gravimetric or volumetric? 
Volumetric 
The label on plant food reads 25-20-17. What does this mean? 
25% nitrogen 
20% phosphorus 
17% potassi...
CHEM 121 LAB - FINAL EXAM: STUDY GUIDE (UNR) EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED 
 
An Approximation 
Every measurement made in the laboratory is really an ... 
Pipet 
A ... is a glass vessel calibrated to deliver a precisely known value of liquid at a given temperature. 
(A+B)/2 
The a...
Preview 2 out of 7 pages
Add to cartCHEM 121 LAB - FINAL EXAM: STUDY GUIDE (UNR) EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED 
 
An Approximation 
Every measurement made in the laboratory is really an ... 
Pipet 
A ... is a glass vessel calibrated to deliver a precisely known value of liquid at a given temperature. 
(A+B)/2 
The a...
CHEM 121 LAB PORTAGE LEARNING QUIZ 1 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED 100% GUARANTEED PASS 
Calculate the density of a rock that weighs 4.56 grams and has a volume of 2.88 cm³. 
1.58 grams/cm³ 
A nail weighing 7.88 grams is placed in a graduated cylinder containing 22.35 mL o...
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Add to cartCHEM 121 LAB PORTAGE LEARNING QUIZ 1 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED 100% GUARANTEED PASS 
Calculate the density of a rock that weighs 4.56 grams and has a volume of 2.88 cm³. 
1.58 grams/cm³ 
A nail weighing 7.88 grams is placed in a graduated cylinder containing 22.35 mL o...
CHEM 121 LAB EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024 
 
 
Given a gram of a 1:1 mixture benzoic acid and cholesterol, describe how you would separate the two compound. 
1. In a separatory funnel, dissolving each in ether. Add a base. 
Organic layer will contain the ether 
...
Preview 2 out of 5 pages
Add to cartCHEM 121 LAB EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024 
 
 
Given a gram of a 1:1 mixture benzoic acid and cholesterol, describe how you would separate the two compound. 
1. In a separatory funnel, dissolving each in ether. Add a base. 
Organic layer will contain the ether 
...
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