Answer:
option d= 2
pH of gastric juice in stomach is vary from 1.5 - 3.5. So it could be 2.
Explanation:
Gastric juice present in the stomach is acidic in nature. It is composed of mainly sodium chloride, hydrochloric acid and potassium chloride. It is produce by the cells present in stomach lining. It activate the digestive enzyme and play important role in the digestion of protein . These enzymes break the chain of amino acids. Its acidic pH is not harmful for the stomach because lining cells of stomach also produce mucus that act as a barrier.
Chemical composition of gastric juice and their functions:
The gastric juice is a mixture of several chemicals including:
water:
water can not effect the stomach pH. it provide liquidity to mix the food, acids and enzymes. some enzymes also require water to perform the function.
Mucous:
It is produce in stomach. mouth and esophagus. It passes the food through gastrointestinal track in a protected way and also provide the protection to stomach from acid.
Hydrochloric Acid:
HCl is secreted by parietal cells of stomach. it kills the pathogens and bacteria in food and also convert the pepsinogen into pepsin. pepsin breaks the secondary and tertiary proteins and help in digestion.
Pepsinogen:
It also help to digest the protein.
Hormones and Electrolytes:
They help in food digestion and nutrient absorption.
Gastric Lipase:
t help to breake the fats of short and medium chain.
Amylase:
It is found in saliva and break down the carbohydrates.
Answer:
It is called absolute humidity.
Explanation:
The amount of the nitrogen gas, N₂ molecules present is 2.68×10²² molecules
<h3>Avogadro's hypothesis </h3>
1 mole of N₂ = 6.02×10²³ molecules
<h3>How to determine the mole of N₂</h3>
We'll begin by calculating the number of mole of N₂. This can be obtained as follow:
- Mass of N₂ = 1.25 g
- Molar mass of N₂ = 28.02 g/mol
- Mole of N₂ =?
Mole = mass / molar mass
Mole of N₂ = 1.25 / 28.02
Mole of N₂ = 0.0446 mole
<h3>How to determine the molecules of N₂ present</h3>
From Avogadro's hypothesis,
1 mole of N₂ = 6.02×10²³ molecules
Therefore,
0.0446 mole N₂ = 0.0446 × 6.02×10²³
0.0446 mole N₂ = 2.68×10²² molecules
Thus, the molecules of N₂ present is 2.68×10²² molecules
Learn more about Avogadro's number:
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The question is incomplete, complete question is:
A solution containing CaCl2 is mixed with a solution of Li2C2O4 to form a solution that is in calcium ion and in oxalate ion. What will happen once these solutions are mixed?
Answer:
On mixing of both the solutions no precipitation will occur due to lower value of an ionic product of calcium oxalate from its solubility product.
Explanation:
Molar concentration of calcium ions =
Molar concentration of oxalate ions =
ionic product of calcium oxalate in solution :
Solubility product of calcium oxalate =
Generally precipitation occurs when ionic product of substance in solution exceeds its solubility product.
(precipitation occurs)
(non precipitation occurs)
On mixing of both the solutions no precipitation will occur due to lower value of an ionic product of calcium oxalate from its solubility product.
We know because of DNA testing in general.