Enable contrast version

Tutor profile: Sean D.

Inactive
Sean D.
High school science teacher
Tutor Satisfaction Guarantee

Questions

Subject: Environmental Science

TutorMe
Question:

Explain how positive feedback loops could exacerbate the effects of climate change? Provide an example in your explanation.

Inactive
Sean D.
Answer:

A positive feedback loop takes place when the product of a reaction results in an increase of that reaction. As a result, positive feedback loops tend to amplify change. Let's consider ocean warming as an example of how positive feedback loops could amplify climatic changes. In this example, the initial reaction is an increase in atmospheric CO2 brought on by the burning of fossil fuels, transportation, and other industrial processes. Due to the the greenhouse effect, an increase in atmospheric CO2 will heighten the warming potential of the atmosphere, increasing the atmospheric temperature in turn. As air temperatures warm, so will ocean temperatures. The solubility of CO2 in water decreases as water temperature increases. Therefore, as water warms it will release CO2 into the atmosphere. In this instance, an initial increase in CO2 from greenhouse gas emissions could lead to changes which further add CO2 into the atmosphere.

Subject: Chemistry

TutorMe
Question:

Compare the strength of intermolecular forces between a substance with a high boiling point and a substance with a lower boiling point.

Inactive
Sean D.
Answer:

The boiling point of a substance is directly related to the strength of its intermolecular forces (attractive forces between molecules of a substance). As heat is applied to any liquid the average kinetic energy (KE) of its molecules will increase until it arrives at the boiling point. As the KE of molecules increases, intermolecular forces (IMFs) are overcome, and weaken. Substances with weak IMFs, need very little KE to overcome the attractive forces between molecules. As a result they will have low boiling points. In contrast, molecules need much more KE to overcome the forces of attraction in substances with strong IMFs. More heat will be needed to overcome the stronger IMFs, and boiling will occur at a higher temperature. Therefore, A substance with a substance with a high boiling point will likely have stronger IMFs than a substance with a lower boiling point.

Subject: Basic Chemistry

TutorMe
Question:

Describe what "moles" represent. In your answer, explain why they are useful for chemists.

Inactive
Sean D.
Answer:

Moles are a standard unit representing an amount of a substance. We know that a standard dozen refers to twelve of something––could be slices of bread, eggs, or dollars. Moles, in a similar way, refer to 6.02x10^23 particles of a given substance––the identity of the materials does not matter. By using moles, chemists can make the subatomic world easier to comprehend and manage. Chemists can readily convert between weight, number of particles, and the number of moles in a substance, allowing for precision and predictability in chemical equations and experimentation.

Contact tutor

Send a message explaining your
needs and Sean will reply soon.
Contact Sean

Request lesson

Ready now? Request a lesson.
Start Lesson

FAQs

What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Lesson" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.