Explanation

• When assessing for pain in a toddler, Observing the child for restlessness would be the most appropriate
  

Explanation

The most important hormone in initiating and maintaining lactation after birth is prolactin. 

Prolactin is the hormone responsible for stimulating milk production in the breasts. 

Explanation

 The temperature scale that is independent of the nature of the working substance is the Thermodynamic scale (Kelvin scale). 

Explanation

Aromatic hydrocarbons have a high carbon-to-hydrogen ratio, which leads to incomplete combustion and the production of soot when burned, resulting in a smoky flame. 

Explanation

Each molecule of water (H₂O) has 10 electrons (2 from hydrogen and 8 from oxygen).

Therefore, 1 mole of water has 10 moles of electrons.

So, 10 moles of water have 10 x 10 = 100 moles of electrons.

Explanation

The return of light or sound waves from a surface.

An image produced by or as if by a mirror. 

Something that brings blame or disgrace It's a reflection on my honesty. 

Careful thought After much reflection, I agreed. 

An opinion formed or a remark made after careful thought.

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

Of the elements listed, aluminum is the one that most commonly exhibits a +3 oxidation state.

Sodium typically shows a +1 oxidation state, and magnesium typically shows a +2 oxidation state.

While iron can exist in a +3 oxidation state (as in iron(III) chloride),

It also commonly exists in a +2 oxidation state (as in iron(II) sulfate), making it a transition metal with variable oxidation states. 

Explanation

Ozonolysis cleaves the double bond in 3-Ethyl-2-pentene, forming two carbonyl compounds.

The double bond is between C2 and C3:

CH3–CH=CH–CH(CH2CH3)–CH3

On ozonolysis, it breaks at the double bond, yielding:

- Ethanal (CH3CHO) from the CH= part

- 3-Pentanone (CH3COCH2CH2CH3) from the rest

Explanation

Bacteria, specifically Escherichia coli (E. coli),

They are commonly used in genetic engineering to produce large quantities of human insulin

. The insulin gene is inserted into the bacteria's DNA, allowing them to produce the insulin protein when replicated