Science Mathematics

How to calculate the pH of the following water solutions?

Rating - 3 (1 Votes)

I've tried multiple equations..
1. 0.000000419 [OH-]

2. 0.0000381 M [H+]

3. 3.69 x 10^-9 M HClO4 ( 4 is subscript)

4. 6.27 x 10^ -5 M NaOH

2 Questions about human migration?

Rating - 3 (1 Votes)

Ok so if we all really came from black people in East Africa and spread through out the world and developed different skin tones hair colors and eye colors due ...

Help with Calculus Problem! Find the area of the region enclosed by the graphs f(x) and -f(x)...?

Rating - 3 (1 Votes)

Let f be the functions given by:

f(x) = sqrt(16-(x-1)^2)

Find the area of the region enclosed by the graphs of f(x) and -f(x).

I have no idea how to do this. Any ...

I need an AND gate for a calculator project?

Rating - 3 (1 Votes)

So, im new to yahoo, because im only 16. I was going to build a calculator, a very basic one, and i wanted to use some AND gates for the ...

Another trigonometric functions of any angle...?

Rating - 3 (1 Votes)

Find Theta for 0 degrees less than or equal to Theta less than 360 degrees, rounded to the nearest tenth of a degree. Explain fully.
cos Theta = -0.1050
Theta ...

Will anyone of you please explain this problem to me?? thanks in advance?

Rating - 3 (1 Votes)

differentiate w.r.t x
Q. e^(2logx)
*please explain me the use of natural algorithm in this problem in detail. i am unable to understand it*

How do you solve for x in the equation x^x=3?

Rating - 3 (1 Votes)

I need to know exactly how to do this so if you can, please explain everything I need to know. Thanks in advance!

Biology Biology Biology?

Rating - 3 (1 Votes)

Following meiosis I, the daughter cells are what; following meiosis II, the daughter cells are what; and following mitosis, the daughter cells are what?

Navigation