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In reality, silver actually has an even higher electrical conductivity than copper, but silver is too expensive to use. Silver is indeed the best conductor of electricity among common metals, surpassing even copper. Despite silver's superior conductivity, copper is the preferred choice for lightning conductors because it offers a good balance of conductivity and affordability. Copper is a highly suitable metal for use in lightning conductors due to its excellent electrical conductivity and resistance to corrosion. It is a very good conductor of electricity, meaning it allows electric charges to flow through it easily. This is crucial for a lightning conductor to safely conduct the electrical energy from a lightning strike to the ground.

The graphical representation of the Arrhenius equation, which describes the temperature dependence of reaction rates, involves plotting the natural logarithm of the rate constant (ln k) against the inverse of the absolute temperature (1/T), resulting in a straight line with a slope of -Ea/R and a y-intercept of ln A. (See an example above)

- The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen. HOWEVER; - Earth's crust is made up of several elements: oxygen, 46.6 percent by weight; silicon, 27.7 percent; aluminum, 8.1 percent; iron, 5 percent; calcium, 3.6 percent; sodium, 2.8 percent, potassium, 2.6 percent, and magnesium, 2.1 percent. - This implies that Oxygen is the most abundant element (by mass) in the Earth's crust, making up almost half of the crust's mass

Metalloids are also known as semi-metals. Metalloids are elements that exhibit properties intermediate between those of metals and non-metals.

Flotation, a common ore concentration method, is primarily used for concentrating sulphide ores like those containing copper, lead, and zinc. Flotation excels at separating valuable minerals from sulphide ores because the process relies on the selective wetting of sulphide minerals by oil, which allows them to attach to air bubbles and float to the surface. Common examples of sulphide ores concentrated by flotation include galena (PbS), zinc blende (ZnS), and copper pyrites (CuFeS\(_2\)).

When a Calcium compound is held in a non-luminous Bunsen flame and viewed directly with the naked eye, it is seen as brick red,then as light green as seen through blue glass.

Iron is not a primary component of duralumin, but it is the primary component of steel alloys. Duralumin is primarily an aluminum alloy, while steel is primarily an iron alloy. Iron is not a primary or defining component of either brass or bronze alloys; brass is primarily a copper-zinc alloy, while bronze is primarily a copper-tin alloy. Permalloy is a nickel–iron magnetic alloy, with about 80% nickel and 20% iron content. Iron is generally not present in soft solder alloys, which are typically composed of tin and lead, or tin with other metals like silver or copper.

Carbon(II) oxide is prepared from Carbon(IV) oxide by passing CO\(_2\) through red-hot carbon. Most of the CO\(_2\) becomes reduced to CO. However, the uncharged CO\(_2\) is removed by passing the mixture through concentrated NaOH, in order to collect the pure CO over water.

The IUPAC nomenclature for the hydrocarbon is 3-methylbut-1-ene. First, identify the longest C- chain. The longest 4 Carbon atoms → But-1-ene (because of the double bond on C-1 which depicts an ethene) Secondly, the substituent functional group methyl CH\(_3\) → 3-methyl (because the methyl is on C-3 with reference from where the double bond counts from) Lastly, add up step 2 and 1 → 3-methyl but-1-ene.

The IUPAC nomenclature for the hydrocarbon is 3-methylbut-1-ene. First, identify the longest C- chain. The longest 4 Carbon atoms → But-1-ene (because of the double bond on C-1 which depicts an ethene) Secondly, the substituent functional group methyl CH\(_3\) → 3-methyl (because the methyl is on C-3 with reference from where the double bond counts from) Lastly, add up step 2 and 1 → 3-methyl but-1-ene.

"Perceptive" refers to the ability to perceive or understand things quickly and accurately, often through observation or insight. In the context of the sentence, Sikemi's observant nature suggests that she is perceptive, noticing details and understanding situations well.

"Crucial" means extremely important or essential. It is similar to the idea of playing a vital role in the development of Africa.

"Authentic" in this context implies genuine or true to life, similar to being realistic. It suggests that Emeka's painting closely resembles reality and is not artificial or exaggerated.

The word "courteously" means in a polite, considerate, or mannerly way. In the context of the sentence, Ade is showing courtesy by standing back and letting his teacher go through the door first. Therefore, the word "polite" in option B is the closest in meaning to "courteously." Both words convey the idea of behaving with good manners and showing respect.

The word "poverty" refers to the state of being extremely poor, lacking basic necessities or financial resources. Option B, "want," is the option nearest in meaning. "Want" can be used as a synonym for poverty, indicating a state of lacking material possessions or financial means. Options A, C, and D do not accurately capture the meaning of living in poverty. Option A, "instability," generally refers to a lack of stability, option C, "difficulty," is more about challenges in general, and option D, "the slums," refers specifically to impoverished areas rather than the state of poverty itself.