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CHEM 103 Module 1 to 6 Exam Answers 2021/2022 Portage learning. MODULE 1 EXAM

Question 1

Click this link to access the Periodic Table. This may be helpful throughout

the exam.

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.

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 decimal 5

places = 0.

Question 2
...
CHEM 103 Module 1 to 6 Exam Answers 2021/2022 Portage learning
Last document update:
ago
CHEM 103 Module 1 to 6 Exam Answers 2021/2022 Portage learning. MODULE 1 EXAM

Question 1

Click this link to access the Periodic Table. This may be helpful throughout

the exam.

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.

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 decimal 5

places = 0.

Question 2
...
CHEM 103 Module 3 Exam Portage Learning 2023. NH4Cl is being dissolved in water and this process is being studied in a styrofoam coffee cup

with a lid and the heat absorbed is measured by means of a thermometer immersed in the

reaction mixture. Enter the correct thermochemistry term to describe the item listed.

1. The type of thermochemical process

2. The air above the cup

Your Answer:

1) endothermic

2) Surroundings

1. Heat absorbed = Endothermic process

2. The air above the cup = Surro...
CHEM 103 Module 3 Exam Portage Learning 2023
Last document update:
ago
CHEM 103 Module 3 Exam Portage Learning 2023. NH4Cl is being dissolved in water and this process is being studied in a styrofoam coffee cup

with a lid and the heat absorbed is measured by means of a thermometer immersed in the

reaction mixture. Enter the correct thermochemistry term to describe the item listed.

1. The type of thermochemical process

2. The air above the cup

Your Answer:

1) endothermic

2) Surroundings

1. Heat absorbed = Endothermic process

2. The air above the cup = Surro...
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?

5. What device is used to smother small fires?

1.) beaker

2.) glass is strong combat things like acid and other kinds of harsh stuff. It is

neutral with most lab chemicals.

3.) tongs.

4.) watch glass

5.) fire blanket .

1. beaker

2. Glass is so often used as a material for lab containers because it is

unreactive with most l...
CHEM 103 Lab Exam 1 Questions With Answers | Latest 2023/2024 (Portage Learning)
Last document update:
ago
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?

5. What device is used to smother small fires?

1.) beaker

2.) glass is strong combat things like acid and other kinds of harsh stuff. It is

neutral with most lab chemicals.

3.) tongs.

4.) watch glass

5.) fire blanket .

1. beaker

2. Glass is so often used as a material for lab containers because it is

unreactive with most l...
How much did you already spend on Stuvia? Imagine there are plenty more of you out there paying for study notes, but this time YOU are the seller. Ka-ching!
CHEM 103 Module 3 Exam with Answers – Portage Learning
Exam (elaborations) • 9
pages
• 2023
CHEM 103 Module 3 Exam with Answers – Portage Learning. The calorimeter and mixture of HCl + NaOH

Your Answer:

1. The type of thermochemical process is an acid base reaction or

neutralization reaction where heat is given off called a exothermic reaction.

2. The calorimeter and mixture of HCl + NaOH would be described as

enthalpy or the total energy of the system.

1. Heat given off = Exothermic process

2. With lid = closed system

Question 2

Not yet graded / 10 pts

Click this link to a...
CHEM 103 Module 3 Exam with Answers – Portage Learning
Last document update:
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CHEM 103 Module 3 Exam with Answers – Portage Learning. The calorimeter and mixture of HCl + NaOH

Your Answer:

1. The type of thermochemical process is an acid base reaction or

neutralization reaction where heat is given off called a exothermic reaction.

2. The calorimeter and mixture of HCl + NaOH would be described as

enthalpy or the total energy of the system.

1. Heat given off = Exothermic process

2. With lid = closed system

Question 2

Not yet graded / 10 pts

Click this link to a...
CHEM 103 Lab Exam 6 – Portage Learning. Bonds within a molecule are called intra-molecular bonds.

Non-polar (type) compounds are insoluble in water
CHEM 103 Lab Exam 6 – Portage Learning
Last document update:
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CHEM 103 Lab Exam 6 – Portage Learning. Bonds within a molecule are called intra-molecular bonds.

Non-polar (type) compounds are insoluble in water
CHEM 103 Lab Exam 8 – Portage Learning. The unit “m” stands for _______ in this experiment.

2. (4 points) Why was warming data used for estimating the freezing/melting

point of the cyclohexane?

3. (3 points) How much of the cyclohexane solvent was placed in the test?

1.) molarity

2.) It is considered reliable.
CHEM 103 Lab Exam 8 – Portage Learning
Last document update:
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CHEM 103 Lab Exam 8 – Portage Learning. The unit “m” stands for _______ in this experiment.

2. (4 points) Why was warming data used for estimating the freezing/melting

point of the cyclohexane?

3. (3 points) How much of the cyclohexane solvent was placed in the test?

1.) molarity

2.) It is considered reliable.
CHEM 103 Module 3 Exam with Answers – Portage Learning. A reaction between HCl and NaOH is being studied in a styrofoam coffee cup

with a lid and the heat given off is measured by means of a thermometer

immersed in the reaction mixture. Enter the correct thermochemistry term

to describe the item listed.

1. The type of thermochemical process

2. The calorimeter and mixture of HCl + NaOH

Your Answer:

1. The type of thermochemical process is an acid base reaction or

neutralization reaction...
CHEM 103 Module 3 Exam with Answers – Portage Learning
Last document update:
ago
CHEM 103 Module 3 Exam with Answers – Portage Learning. A reaction between HCl and NaOH is being studied in a styrofoam coffee cup

with a lid and the heat given off is measured by means of a thermometer

immersed in the reaction mixture. Enter the correct thermochemistry term

to describe the item listed.

1. The type of thermochemical process

2. The calorimeter and mixture of HCl + NaOH

Your Answer:

1. The type of thermochemical process is an acid base reaction or

neutralization reaction...
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