Explanation

 Xenon is the most polarized noble gas due to its large size and electron cloud,

This makes it more susceptible to distortion by external electric fields. 

Explanation

 Newspaper, and paper products in general, can typically be recycled around 5 to 7 times

Before the fibers become too short and weak to be reused effectively in the recycling process.

Explanation

Nitrogen makes up about 3% of the human body by mass.

It is mostly found in proteins, DNA, and RNA.

It is essential for building amino acids and nucleic acids in the body.

Explanation

In Ascidian embryos, the grey crescent gives rise to the notochord. 

The gray crescent:

• In ascidian development, the gray crescent is a region of pigmented cytoplasm located at the posterior of the fertilized egg.
• It is important for determining the future location of the notochord and neural tube. 

Notochord formation:

• The cells derived from the gray crescent are specifically destined to form the notochord, a rod-like structure that provides structural support during development. 

Explanation

In the borax bead test, cobalt ions (Co²+) react with borax to form cobalt metaborate (Co(BO2)2), which produces a distinct blue color. 

Explanation

Phosphorus is not among the top 10 most abundant elements in the Earth's crust.

Most abundant element in Earth crust is Oxygen.

Oxygen in the crust is (46. 1%).

The chemical formula of oxygen (dioxygen) is O2.

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List of 10 Most Abundant Elements in the Earth's Crust

SH10-8-2023

Explanation

Sodium (Na) and Chlorine (Cl) together make up about 0.45% of the human body mass.

They are essential electrolytes that help regulate fluid balance, nerve function, and muscle activity.

Explanation

 Hydroxylation of alkene can be carried out by  alkaline KMnO4. 

Hydroxylation refers to the addition of two hydroxyl (OH) groups across a carbon-carbon double bond in an alkene.

Cold, dilute, alkaline potassium permanganate (KMnO4) is a common reagent used for this reaction.

It reacts with the alkene to form a vicinal diol (a molecule with two hydroxyl groups on adjacent carbon atoms). 

Explanation

The nickname given to Mr. Chipping by his students is Mr. Chips. 

Explanation

The average global concentration of ozone is around 300 DU,

Meaning if all the ozone in the Earth's atmosphere were compressed to that thickness, it would form a layer 3 millimeters thick.