TutorMe homepage

SIGN IN

Start Free Trial

Tanaya N.

Student at BITS Pilani, Tutor for 8 years

Tutor Satisfaction Guarantee

Chemistry

TutorMe

Question:

pKa of a weak acid (HA) and pKb of a weak base (BOH) are 3.2 and 3.4, respectively. Find the pH of their salt (AB) solution.

Tanaya N.

Answer:

pKa (HA) = 3.2 pKb (BOH) = 3.4 As given salt is of weak acid and weak base pH = 7 + pKa/2 - pKb/2 = 7 + 1 1 (3.2) – (3.4) 2 2 = 6.9

Calculus

TutorMe

Question:

Find the area enclosed by the curve y = f (x) defined parametrically as x = (1- t^2)/(1+ t^2) and y = 2t/(1+ t^2)

Tanaya N.

Answer:

Clearly, t can be any real number Let t = tan θ then we get x = cos 2θ and y = sin2θ giving the curve f(x) = y, a circle with radius = 1 unit area = pi * r^2 = pi * 1^2 = pi

Algebra

TutorMe

Question:

x = a^3 + b^3 + c^3 y= a+b+c find value of x in terms of abc if y = 0

Tanaya N.

Answer:

a^3 + b^3 + c^3 - 3abc = (a+b+c)(a^2 +b^2 +c^2 -ab -bc -ca) using the above exapnsion we get x = 3abc

Send a message explaining your

needs and Tanaya will reply soon.

needs and Tanaya will reply soon.

Contact Tanaya

Ready now? Request a lesson.

Start Session

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 Session" 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.

Made in California

© 2018 TutorMe.com, Inc.