Enable contrast version

# Tutor profile: Omar G.

Inactive
Omar G.
Tutor for 4 years
Tutor Satisfaction Guarantee

## Questions

### Subject:Chemistry

TutorMe
Question:

The ionic radii of N^3-, O^2-, F^-, and Na^+ goes in which order from largest to smallest?

Inactive
Omar G.
Answer:

N^3- > O^2- > F^- > Na+ It is important to remember that ions (specifically anions) with negative charges have extra electrons that make them larger in an isoelectric series like the one in the question. A 3- charge means 3 extra electrons were gained so N^3- is the largest ion of this isoelectric series.

### Subject:Statistics

TutorMe
Question:

What are the differences that set apart independence from mutual exclusion?

Inactive
Omar G.
Answer:

Mutual exclusion is when two results are impossible to happen at the same time. Independence is when the probability of an event does not depend on the results that we have had previously. When written out in statistical terms it should look like this: p(A intersection B) = p(A)p(B | A) --> knowing A does not give any information about the next event say that p(B | A) = 0 so then p(A intersection B) = 0 P(A intersection B) = p(A)p(B)

### Subject:Microeconomics

TutorMe
Question:

What are the definitions of price elasticity, cross-price elasticity, and income elasticity? What do these mean in words?

Inactive
Omar G.
Answer:

Prices elasticity of demand is equal to the rate of change of the demand of a good divided by the rate of change in the price of a good. The income elasticity is the rate of change of the demand of a good divided by the rate of change of the income of an individual. The cross-price elasticity is equal to the rate of change of the demand for a good divided by the rate of change of the price of a second good. All of these definitions are all referring to changes in the demand of a good and the effect that it has on the change in another variable like income and price. The higher the value is the more sensitive demand is to changes in the other variable.

## Contact tutor

Send a message explaining your
needs and Omar will reply soon.
ContactÂ Omar

## 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.