Which of these 1 M solutions will have the highest pH? 1. NaOH 2. CH3OH 3. HCl 4. NaCl

The reaction of sodium with bromide is sodium bromide. The balanced chemical equation is Na + Br → NaBr. In the reaction, only one mole of sodium is needed to react with one mole of bromine to produce one mole of sodium bromide. 

Answer:

A 1:1

Explanation:

The substance in the air that makes the surface of limestone change is sulfur dioxide (SO2).

What are limestone?

Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It can form in a variety of ways, but most commonly it is formed from the accumulation of the remains of marine organisms such as coral, shells, and other calcium-rich materials.

Limestone is a common building material and is used in construction, as a flux in the production of iron and steel, and in agriculture as a soil conditioner. It is also used in the chemical industry to produce lime, carbon dioxide, and other chemicals. Limestone can be found in many parts of the world and is usually formed in shallow, warm marine environments.

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Final answer:

The correct order of bone layers from outside to inside is Periosteum, compact bone, spongy bone, and marrow. This corresponds to option D in your question.

Explanation:

The structure of a bone from the outside to the inside is labeled as follows: First, the outermost later is the periosteum. It is a dense layer made up of connective tissue, which provides nourishment and support. The next layer inside is the compact bone. It provides hardness and strength.

Beneath the compact bone is the spongy bone which is porous and lighter, offering shock absorption to the bone. Finally, at the very center is the marrow, responsible for the production of red blood cells. So, the correct answer is D: Periosteum, compact bone, spongy bone, marrow.

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Explanation:

Osmotic pressure is defined as the minimum pressure which has to applied on the solution to prevent the entry of the solvent in the solution through a semi-permeable membrane.

It is a type of colligative property which means it depends on the amount of the solution. More the amount, more will be the osmotic pressure.

Mathematically,

= Osmotic pressure

i = Vant's Hoff factor which is 1 for non-electrolyte solutions

c = Concentration of solution

R = Solution constant

T = temperature

• For

As Ferric chloride is an electrolyte, so it will completely dissociate into its ions.

1 mole of ferric chloride will dissociate into 1 ion and 3 ions.

Here, value of i = 4

• For Glucose

Glucose is a non-electrolyte and hence will not dissociate into the respective ions. So, value of i = 1

Osmotic pressure will be high for high value of 'i'. Therefore, osmotic pressure of will be high as compared to the glucose in same amount of water.

Answer:

The correct answer is meiosis takes place, making the sperm cell haploid.

Explanation:

From secondary spermatocytes, the formation of haploid male gamete, that is, spermatid takes place. Its formation takes place by the procedure of meiosis, and therefore, it comprises half of the genetic substance as found in in the primary spermatocyte.  

In the beginning, spermatid is a round, immotile cell that distinguishes and turns motile and unique by the procedure is known as spermiogenesis.