How do you calculate the effusion of a gas?
From Graham’s law, we can use the molar mass of each gas: rate of effusion of hydrogenrate of effusion of oxygen=√32g mol−1 √2g mol−1 =√16√1=41 rate of effusion of hydrogen rate of effusion of oxygen = 32 g mol − 1 2 g mol − 1 = 16 1 = 4 1 Hydrogen effuses four times as rapidly as oxygen.
Which of the following describes diffusion?
Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. The material that diffuses could be a solid, liquid or gas. Similarly, two miscible liquids will also diffuse into each other to form a uniform solution.
What best describes molecular movement during diffusion?
Which of the following best describes molecular motion? Molecules move in random directions. The concentration of solute will be equal everywhere.
In what organ does digestion begin?
Mouth. The digestive process starts in your mouth when you chew. Your salivary glands make saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach. Saliva also has an enzyme that begins to break down starches in your food.
What is produced when proteins are digested?
Proteins. Proteins are digested in the stomach and small intestine. Protease enzymes break down proteins into amino acids. Digestion of proteins in the stomach is helped by stomach acid, which is strong hydrochloric acid.
What enzyme digests proteins?
The enzyme pepsin plays an important role in the digestion of proteins by breaking down the intact protein to peptides, which are short chains of four to nine amino acids. In the duodenum, other enzymes— trypsin, elastase, and chymotrypsin—act on the peptides reducing them to smaller peptides.
Where does the chemical digestion of proteins begin?
Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.
How do we digest proteins?
Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids. Amino acids are joined together by peptides, which are broken by proteases. From your stomach, these smaller chains of amino acids move into your small intestine.
Where does chemical digestion of protein begin quizlet?
Where does the chemical digestion of proteins begin? protein digestion begins in the stomach, pancreatic enzymes break the final polypeptide chains into amino acids.
Where does the digestion of proteins begin and end quizlet?
Protein digestion begins in the stomach and ends in the small intestine. Pepsin is a gastric enzyme that initiates protein digestion.