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?

What is the charge on an ion that contains 16 protons and 18 electrons?

Use the following equation to answer the question below: Sb2S3 (s) + 3Fe (s) - - > 2Sb (s) + 3FeS (s) When 18.45g Sb2S3 reacts with an excess of Fe, 12.1g Sb is produced. What is the percent yield of this reaction? 65.6% 75.4% 84.1% 91.5%

Suppose you have two identical-looking metal spheres of the same size and the same mass. One of them is solid; the other is hollow. Describe a simple test that you could do to determine which is which.

Give a possible molecular formula for the empirical formula of c3h5clo.

Your friend mention that she eats only natural food because she wants her food to be free of chemicals. What is wrong with this reasoning?

Define "Homoglycan" and "Heteroglycan" and give an example of each

If you have 200 grams of iodine how many atoms do you have?

Sea salt is formed by natural evaporation of ocean water and contains 98% sodium chloride. The remaining 2% are natural minerals such as iron and sulfur. Consider a 84.7-g sample of sea salt.

Which element in group 15 is the strongest metallic character?

Can neptune sustain life?