Question 18 0/5 pts
While the 20 natural amino acids have existed on Earth for
billions of years, Chemists have been able to synthesize
unnatural amino acids. For instance, scientists recently created an
amino acid that resembles Lysine but the primary amino group on
the side-chain now has a pk, value close to 14. A polymer of this
unnatural Lys amino acid is formed and tested for a-helix
formation at different pH values. You predict that the helix will
form only at:
swered
• pH values well below (e. g. lower) 14
pH values well below (e. g. lower) 10
Answer
pH values well above (e. g. higher) 14
physiological pH
physiological pH
pH values well above (e. g. higher) 10

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance

Which of these natural resources is non-renewable a. corn b. wind c. geothermal d. natural gas

If the solubility of a gas in water is 1.22 g/l at 2.75 atm, what is its solubility (in g/l) at 1.0 atm?