Explanation

The phrase should be "I am proud of my brother."

This indicates a feeling of pride in relation to someone or something.

Explanation

 Chromatography involves the distribution of mixture components between a mobile phase and a stationary phase.

The mobile phase is a fluid stream (liquid or gas) that carries the components of the mixture

While the stationary phase is a fixed material that interacts with these components

Slowing their movement and leading to separation

Explanation

 Velocity is a vector quantity

Because it requires both magnitude (speed) and direction to be fully defined.

In contrast, speed is a scalar quantity as it only has magnitude.

Explanation

Repeated extraction using portions of solvent is more efficient than using a single large portion of solvent. 

Efficiency in repeated extractions:

When you use small portions of solvent repeatedly, each extraction removes a portion of the solute from the original solution, maintaining a higher concentration gradient for subsequent extractions.

This leads to a more efficient transfer of the solute to the solvent.

Concentration gradient:

By repeatedly adding fresh solvent, you create a higher concentration difference between the solute in the original solution and the solvent, allowing for better transfer of the solute.

Single extraction limitation:

Using a single large volume of solvent may not be as efficient because the solute may not have enough time to fully transfer to the solvent due to a lower concentration gradient. 

Explanation

According to Newton's First Law of Motion, the mass of an object measures its inertia.

It is the resistance of an object to changes in its state of motion.

Explanation

Maximum molar volume is at 127°C and 1 atm = 32.84 L

Explanation

Perhaps the most familiar example of resonance in everyday life is swinging on a playground swing.

The first push or pump sets the swing in motion.

Each subsequent push or pump is delivered at just the right time to increase the amplitude of swing.

Explanation

The 6th period of the modern periodic table contains 32 elements.

This period is known as the "extended" period and includes elements from the Lanthanide series. 

It is the longest period of the periodic table

Explanation

Inertial mass and gravitational mass are Identical in value,

Although they describe different properties of an object and are measured in different ways.

Inertial mass:

measures an object's resistance to acceleration when a force is applied. 

Gravitational mass:

describes how an object interacts with a gravitational field, determining the force it experiences or exerts due to gravity. 

Explanation

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