Is the tetrapeptide ala-glu-gly-lys a good buffer at ph 7.0? will it move in an electric field at ph 7.0?

There are 1.806 x 1025 molecules of water (H2O). How many moles of water does the sample contain?

Who discovered neutrons? A. James Chadwick B. Ernest Rutherford C. John Dalton D. J. J. Thompson

Balance the following equation and determine the mole ratio of Cl2 to CCl4. CS2 + Cl2 CCl4 + S2Cl2 ) A) 1:1 ) B) 2:4 ) C) 1:2 ) D) 3:1 ) E) 1:3

What happened to the mars Climate Orbiter and why? How much money did NASA lose from this incident?

A gas occupies 4.00 L at 2.00 atm pressure. At what pressure would the volume be 6.00 L if the temperature remains constant?

Which is NOT a property of gold? A. rare B. tarnishes C. malleable D. corrosion resistant

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

Describe what you can do to slow down, or stop the continuous negative human treatment of our aquatic biomes.

If the hydrogen ion concentration is 10-7M, what is the pH of the solution? Show all work.

When it is raining water is returning to earth as a water cycle stage called