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CHEM 121 Lab 4 Chemical Reactions SPRING 2024 Portage learning
Title: Chemical Reactions 
Purpose: Observe different kinds of chemical reactions and the results. Six tyles of simple 
chemical reactions and reversible reactions 
Procedure: 
1. Combine AgNO3 (silver nitrate) and HCl (hydrochloric acid) in test tube. White solid 
forms - AgCl (silver chloride) 
2. Put stopper on and invert to mix. Double displacement reaction. 
3. Combine KI and Pb(NO3)2 - creates a yellow liquid (used to be used in paints - caused 
lead poisoning) 
4. Acid/Base Double displac...
- Package deal
- Other
- • 8 pages •
Title: Chemical Reactions 
Purpose: Observe different kinds of chemical reactions and the results. Six tyles of simple 
chemical reactions and reversible reactions 
Procedure: 
1. Combine AgNO3 (silver nitrate) and HCl (hydrochloric acid) in test tube. White solid 
forms - AgCl (silver chloride) 
2. Put stopper on and invert to mix. Double displacement reaction. 
3. Combine KI and Pb(NO3)2 - creates a yellow liquid (used to be used in paints - caused 
lead poisoning) 
4. Acid/Base Double displac...
CHEM 121 Lab 1 Equipment, Safety, and Mass/Volume Measurement Portage learning
Title: Equipment, Safety, and Mass/Volume Measurement 
Purpose: To go over the safety aspects of working in the chemistry lab. Go over the equipment 
that will be used in the chemistry lab. To observe mass and volume measurements. 
Procedure: 
1. Review commonly used laboratory equipment. 
2. Review commonly available safety equipment. 
3. Measure mass of cellphone using analytical scale #1 
4. Measure mass of graduated cylinder using analytical scale #1 
5. Measure mass of metal cylinder using ...
- Package deal
- Other
- • 5 pages •
Title: Equipment, Safety, and Mass/Volume Measurement 
Purpose: To go over the safety aspects of working in the chemistry lab. Go over the equipment 
that will be used in the chemistry lab. To observe mass and volume measurements. 
Procedure: 
1. Review commonly used laboratory equipment. 
2. Review commonly available safety equipment. 
3. Measure mass of cellphone using analytical scale #1 
4. Measure mass of graduated cylinder using analytical scale #1 
5. Measure mass of metal cylinder using ...
CHEM 121 Lab 2 Density SPRING 2024 Portage learning
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...
- Package deal
- Other
- • 11 pages •
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...
CHEM 121 Exam 2 SPRING 2024 Portage learning
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 ...
- Exam (elaborations)
- • 39 pages •
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 ...
CHEM 121 Exam 1 SPRING 2024 Portage learning
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 ...
- Exam (elaborations)
- • 17 pages •
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 ...
CHEM 121 Lab 3 Quantitative and Qualitative Analysis SPRING 2024 Portage learning
Title: Quantitative and Qualitative Analysis 
Purpose: To measure how much of a substance is in a chemical compound. 
Procedure: 
Carbonate 
1. Place one test tube in beaker and tare scale. 
2. Use scoopula to add 1g of the carbonate. Record exact weight and place 
carbonate into beaker. 
3. Add sulfuric acid to test tube (~⅓ full ) and place inside beaker 
4. Measure weight of test tube with sulfuric acid and beaker with carbonate and 
record. Tare scale again. 
5. Pour sulfuric acid into bea...
- Package deal
- Other
- • 5 pages •
Title: Quantitative and Qualitative Analysis 
Purpose: To measure how much of a substance is in a chemical compound. 
Procedure: 
Carbonate 
1. Place one test tube in beaker and tare scale. 
2. Use scoopula to add 1g of the carbonate. Record exact weight and place 
carbonate into beaker. 
3. Add sulfuric acid to test tube (~⅓ full ) and place inside beaker 
4. Measure weight of test tube with sulfuric acid and beaker with carbonate and 
record. Tare scale again. 
5. Pour sulfuric acid into bea...
MATH 110 Module 6 exam Portage learning SPRING 2024
A new drug is introduced that is supposed to reduce fevers. Tests are 
done with the drug. The drug is given to 60 people who have fevers. It is 
found that the mean time that it takes for the fever to get back to normal 
for this test group is 350 minutes with a standard deviation of 90 minutes. 
Find the 80% confidence interval for the mean time that the drug will take 
to reduce all fevers for all people. 
Answer the following questions: 
1. Multiple choice: Which equation would you use to so...
- Exam (elaborations)
- • 13 pages •
A new drug is introduced that is supposed to reduce fevers. Tests are 
done with the drug. The drug is given to 60 people who have fevers. It is 
found that the mean time that it takes for the fever to get back to normal 
for this test group is 350 minutes with a standard deviation of 90 minutes. 
Find the 80% confidence interval for the mean time that the drug will take 
to reduce all fevers for all people. 
Answer the following questions: 
1. Multiple choice: Which equation would you use to so...
BIOD 151 Module 3 exam SPRING 2024 Portage learning
Explain why a patient with liver disease would have intolerance to fatty foods. 
The liver produces bile which breaks down fats. If it is not producing bile (or less bile), fats 
will not be broken down effectively. 
Question 2 
5 / 5 pts 
Fill in the four blanks: 
Food enters the stomach from the ____A_______ via the ____B______ sphincter. 
Food exits the stomach via the ______C______ sphincter into the____D_______. 
- Food enters the stomach from the ______A_____ : esophagus 
- via the _____B_...
- Exam (elaborations)
- • 13 pages •
Explain why a patient with liver disease would have intolerance to fatty foods. 
The liver produces bile which breaks down fats. If it is not producing bile (or less bile), fats 
will not be broken down effectively. 
Question 2 
5 / 5 pts 
Fill in the four blanks: 
Food enters the stomach from the ____A_______ via the ____B______ sphincter. 
Food exits the stomach via the ______C______ sphincter into the____D_______. 
- Food enters the stomach from the ______A_____ : esophagus 
- via the _____B_...
BIOD 151 A& P LAB 7 SPRING 2024 Portage learning
A&P LAB 4 
1A-The Squamosal suture marks the division of which cranial bones? 
Temporal bone and Parietal bones 
1B-The Lambdoidal suture marks the division of which cranial bones? 
Occipital bone and Parietal bones 
2A-Which endocrine gland is situated in the cranial bone 
pictured above (highlighted in blue)? 
The pituitary gland is situated in the hypophyseal fossa of 
the sphenoid bone 
2B- Which cranial bone is pictured above (highlighted in blue)? 
The ethmoid bone 
3A-Which facial bone is...
- Other
- • 3 pages •
A&P LAB 4 
1A-The Squamosal suture marks the division of which cranial bones? 
Temporal bone and Parietal bones 
1B-The Lambdoidal suture marks the division of which cranial bones? 
Occipital bone and Parietal bones 
2A-Which endocrine gland is situated in the cranial bone 
pictured above (highlighted in blue)? 
The pituitary gland is situated in the hypophyseal fossa of 
the sphenoid bone 
2B- Which cranial bone is pictured above (highlighted in blue)? 
The ethmoid bone 
3A-Which facial bone is...
BIOD 151 A& P LAB 4 SPRING 2024 Portage learning
A&P LAB 4 
1A-The Squamosal suture marks the division of which cranial bones? 
Temporal bone and Parietal bones 
1B-The Lambdoidal suture marks the division of which cranial bones? 
Occipital bone and Parietal bones 
2A-Which endocrine gland is situated in the cranial bone 
pictured above (highlighted in blue)? 
The pituitary gland is situated in the hypophyseal fossa of 
the sphenoid bone 
2B- Which cranial bone is pictured above (highlighted in blue)? 
The ethmoid bone 
3A-Which facial bone is...
- Other
- • 4 pages •
A&P LAB 4 
1A-The Squamosal suture marks the division of which cranial bones? 
Temporal bone and Parietal bones 
1B-The Lambdoidal suture marks the division of which cranial bones? 
Occipital bone and Parietal bones 
2A-Which endocrine gland is situated in the cranial bone 
pictured above (highlighted in blue)? 
The pituitary gland is situated in the hypophyseal fossa of 
the sphenoid bone 
2B- Which cranial bone is pictured above (highlighted in blue)? 
The ethmoid bone 
3A-Which facial bone is...
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