PLEASE HELP!!!! Two science questions!!!! 20 points and brainliest!!!

Chemistry

1 answer:

Angelina_Jolie [31]4 years ago

8 0

1. A cylinder is submerged in water as illustrated in the diagram. Which of the following statements is true?

The pressure at D is greater than at B. This is because D is trying to get back to the surface with an amount of pressure. B has less amount of pressure.

2. A cylinder is submerged in water as illustrated in the diagram. If the area of the top and the bottom of the cylinder is the same, which of the following statements is true?

buoyant force = (force D - force A).

Edit: If you ever notice. When you fill a sink full of water. Put a glass upside down and try forcefully to submerge it under the water it will resist. This is because of the pressure and air. The glass is less dense then water. (Also depends on the glass)

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What is the net charge of the peptide arg-ala-phe-leu at ph 8?

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The structure of this oligopeptide is attached:

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From the picture we can see that N terminus charge is +1
Also Arginine is considered as basic amino acid with charge +1
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