Lab Exam 1
● Due No due date
● Points 30
● Questions 3
● Time Limit 60 Minutes
Attempt History
Attempt Time Score
LATEST Attempt 1 48 minutes 26 out of 30
Score for this quiz: 26 out of 30
Submitted Aug 21 at 9:16pm
This attempt took 48 minutes.
Question 1
pts
Scientific Calculator
Answer the following five questions:
1. What is the wide-mouthed glass container shown below?
2. Why is glass so often used as a material for lab containers?
3. What is the metal device used to hold hot containers?
4. What is the weighing dish used for solids?
This study source was downloaded by 100000841990434 from CourseHero.com on 03-12-2022 02:55:32 GMT -06:00
https://www.coursehero.com/file/68676109/Lab-Exam-1docx/
, 5. What device is used to smother small fires?
Your Answer:
Beaker
it can be used with acids and bases and much more including heating.
tongs is used to pick up containers when they are hot
watch glass is used to weigh solids
Fire Extinguisher is used to smother small fires
1. beaker
2. Glass is so often used as a material for lab containers because it is unreactive with most
lab chemicals.
3. The metal device used to hold hot containers is tongs.
4. The weighing dish used for solids is a watch glass.
5. A fire blanket is used to smother small fires
A fire blanket is used to smother small fires
Question 2
pts
Scientific Calculator
Answer the following five questions:
1. Which balance measures mass quickly to 0.01 grams?
2. The mass of the metal cylinder on analytical balance #1 was ? grams.
3. The mass of the cell phone on analytical balance #3 was ? grams.
4. The mass of the graduated cylinder on analytical balance #3 was ? grams.
This study source was downloaded by 100000841990434 from CourseHero.com on 03-12-2022 02:55:32 GMT -06:00
https://www.coursehero.com/file/68676109/Lab-Exam-1docx/
, 5. The mass of the metal cylinder on analytical balance #3 was ? grams.
Your Answer:
Analytical balance
21.5953g
92.9748g
47.6219g
21.5957g
1. The top-loader (single pan) balance measures mass quickly to 0.01 grams.
2. The mass of the metal cylinder on analytical balance #1 was 21.5953 grams.
3. The mass of the cell phone on analytical balance #3 was 92.9748 grams.
4. The mass of the graduated cylinder on analytical balance #3 was 47.6219 grams.
5. The mass of the metal cylinder on analytical balance #3 was 21.5957 grams.
Question 3
pts
Scientific Calculator
Answer the following three questions:
1. Which of the devices was determined to have the smallest % error in volume delivered in lab
1?
2. What was the calculated volume for the 100 ml graduated cylinder in the volume
measurement experiment?
3. Water at 23.9oC has a density of 0.99732 g/ml. A 10.2 ml sample of water at 23.9oC,
delivered from a graduated cylinder had a mass of 9.8851 grams as measured on an analytical
balance. (1) Show the calculation of the actual volume as determined from this mass. (2) Show
the calculation of the % error in volume delivered for this graduated cylinder.
% error = (│delivered value - calculated value│/delivered value) x 100
Your Answer:
This study source was downloaded by 100000841990434 from CourseHero.com on 03-12-2022 02:55:32 GMT -06:00
https://www.coursehero.com/file/68676109/Lab-Exam-1docx/
● Due No due date
● Points 30
● Questions 3
● Time Limit 60 Minutes
Attempt History
Attempt Time Score
LATEST Attempt 1 48 minutes 26 out of 30
Score for this quiz: 26 out of 30
Submitted Aug 21 at 9:16pm
This attempt took 48 minutes.
Question 1
pts
Scientific Calculator
Answer the following five questions:
1. What is the wide-mouthed glass container shown below?
2. Why is glass so often used as a material for lab containers?
3. What is the metal device used to hold hot containers?
4. What is the weighing dish used for solids?
This study source was downloaded by 100000841990434 from CourseHero.com on 03-12-2022 02:55:32 GMT -06:00
https://www.coursehero.com/file/68676109/Lab-Exam-1docx/
, 5. What device is used to smother small fires?
Your Answer:
Beaker
it can be used with acids and bases and much more including heating.
tongs is used to pick up containers when they are hot
watch glass is used to weigh solids
Fire Extinguisher is used to smother small fires
1. beaker
2. Glass is so often used as a material for lab containers because it is unreactive with most
lab chemicals.
3. The metal device used to hold hot containers is tongs.
4. The weighing dish used for solids is a watch glass.
5. A fire blanket is used to smother small fires
A fire blanket is used to smother small fires
Question 2
pts
Scientific Calculator
Answer the following five questions:
1. Which balance measures mass quickly to 0.01 grams?
2. The mass of the metal cylinder on analytical balance #1 was ? grams.
3. The mass of the cell phone on analytical balance #3 was ? grams.
4. The mass of the graduated cylinder on analytical balance #3 was ? grams.
This study source was downloaded by 100000841990434 from CourseHero.com on 03-12-2022 02:55:32 GMT -06:00
https://www.coursehero.com/file/68676109/Lab-Exam-1docx/
, 5. The mass of the metal cylinder on analytical balance #3 was ? grams.
Your Answer:
Analytical balance
21.5953g
92.9748g
47.6219g
21.5957g
1. The top-loader (single pan) balance measures mass quickly to 0.01 grams.
2. The mass of the metal cylinder on analytical balance #1 was 21.5953 grams.
3. The mass of the cell phone on analytical balance #3 was 92.9748 grams.
4. The mass of the graduated cylinder on analytical balance #3 was 47.6219 grams.
5. The mass of the metal cylinder on analytical balance #3 was 21.5957 grams.
Question 3
pts
Scientific Calculator
Answer the following three questions:
1. Which of the devices was determined to have the smallest % error in volume delivered in lab
1?
2. What was the calculated volume for the 100 ml graduated cylinder in the volume
measurement experiment?
3. Water at 23.9oC has a density of 0.99732 g/ml. A 10.2 ml sample of water at 23.9oC,
delivered from a graduated cylinder had a mass of 9.8851 grams as measured on an analytical
balance. (1) Show the calculation of the actual volume as determined from this mass. (2) Show
the calculation of the % error in volume delivered for this graduated cylinder.
% error = (│delivered value - calculated value│/delivered value) x 100
Your Answer:
This study source was downloaded by 100000841990434 from CourseHero.com on 03-12-2022 02:55:32 GMT -06:00
https://www.coursehero.com/file/68676109/Lab-Exam-1docx/
