Boober Fraggle

If you start with a solution that is 13.379 ng/ul how much of that solution and solvent must be combined to make 20 ul of 1.75 ng/ul solution?

What is the pH of a 25 mL solution of 0.12 M aqueous ammonia after the addition

of 5 mL, 12.5 mL and 25 mL of 0.24 M hydrobromic acid?

Calculate the Percentage ionization of acetic acid in solutions having

concentrations of 1.0 M, 0.10 M, and 0.010 M. How does the percentage

ionization of a weak acid change as the acid becomes more dilute?

How many grams of sodium acetate, NaC2H3O2, would have to be added to 1.0 L

of 0.15 M acetic acid to make the solution a buffer with a pH 4.00?

Assuming that the following structures exist, draw the structures of IF7, IF6G, IF5, and

IF4G. In addition, what would be the bond hybridization in each of these compounds

and would expect them to be stable? Please answer all parts of the question.

By reacting boron with hydrogen, a certain borohydride is produced. The compound,

BxHy, will react with water to produce boric acid (H3BO3) and hydrogen gas. If you

take 2.7755 g of this borohydride and react it with water you will produce 12.4057 g

of boric acid and 1.2134 g of hydrogen gas. What is the empirical formula for this

compound? If the molecular weight of this compound is between 25 and 30 g, what

are the actual values of X and Y?

In a Young's double-slit experiment the separation distance y between the second-order bright fringe and the central bright fringe on a flat screen is 0.0191 m, when the light has a wavelength of 425 nm. Assume that the angles are small enough so that sin theta is approximately equal to tan theta. Find the separation y when the light has a wavelength of 601 nm.

Two stars are 4.4 x 10^11 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.28 m and just detects these stars as separate objects. Assume that light of wavelength 540 nm is being observed. Also, assume that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the maximum distance that these stars could be from the earth.

After answering a question it got me thinking. Why do humans drink cow's milk? It's not natural. It's not even made for people to drink. It's made for baby cows. And who was the first guy who tried drinking cows milk? I can't help but think he must have had some mental problems. Maybe he had a strange thing with animals. Don't get me wrong. I love milk I drink it every day. It just seems weird.

Why do people post the same question over and over again? Why do they post it in the wrong catagory?

Why do people post the same question over and over again? Why do they post it in the wrong catagory?

If so what is it?

If you ever look at a cats ear up close you'll see what I mean.