Correct Answer: D. 3x - 2y

Correct Answer: B. X/2 g

Correct Answer: C. 8.5ms^-1

Correct Answer: A) decrease

Explanation

When a reaction is at equilibrium, any change in the concentration of the reactants or products will cause the system to adjust itself in order to maintain equilibrium. This phenomenon is known as Le Chatelier's Principle.

In the given reaction, N\(_2\)(g) + O\(_2\)(g) \(\iff\) 2NO(g), as the concentration of N\(_2\)(g) increases, the equilibrium will shift to the right in order to consume the excess N\(_2\)(g). This means that more NO(g) will be produced, and more O\(_2\)(g) will be consumed.

As a result, the concentration of O\(_2\)(g) willdecrease in response to the increase in the concentration of N\(_2\)(g). This corresponds to Option A in the given question.

Le Chatelier's Principle is an important concept in understanding how systems at equilibrium respond to changes in concentration, temperature, or pressure. It helps us predict the behavior of reactions under different conditions, which is useful in a wide range of applications in chemistry.

Correct Answer: D. \(\frac{1}{81}\)

Correct Answer: A. 8.33

Explanation

Step 1: Find the sum of all the numbers... 2+2+4+4+6+6+8+8+12+12+7+6+5+4+3+3+3+3+3+33+41=175 Step 2: Count how many numbers there are... There are 21 elements. Step 3: Divide the total sum by the number of elements... 175/21=8.33

Correct Answer: C. fat

Explanation

The food substance that would produce the highest amount of energy is fat. Fat is the most energy-dense macronutrient, providing 9 calories per gram. On the other hand, both carbohydrates (including glucose) and proteins provide 4 calories per gram. While amino acids are the building blocks of proteins, they are not a direct source of energy like fat and carbohydrates.

Explanation

(a)Meaning of Depreciation in Agricultural Production

Depreciation refers to the loss or reduction in the value or worth of an asset as the asset is being used over time.

OR

a loss in value of asset as a result of wear and tear or obsolescence over a period of time.

(b)Differences between the following Pairs of Terms as used in Agricultural Production

(i)Farm Records and Farm Accounts

Farm records are information or facts about the activities that take place on the farmwhile/but/ whereas/ on the other hand;

Farm accounts are statements of financial transactions on the farm.

(ii)Credit and Subsidy

Agricultural credit is a repayable loan given to a farmer to carry out farm operations while Agricultural subsidy refers to a non-refundable aid to farmers to reduce cost of production.

(iii)Assets and Liabilities

Farm assets refer to anything of value in the possession of a farm businesswhile/but/ whereas/ on the other hand;Liabilities represents an amount that is owed to others, whether it is payable in cash, goods or services.

(c)Problems of Agricultural Extension in West Africa

• Inadequate transport facilities
• Poor remuneration leading to inadequate motivation
• Corruption among extension personnel
• Inadequate Subject Matter Specialist (SMS)
• Ignorance of the tradition and customs of local communities
• Inadequate extension workers
• Poor communication facilities
• Inadequate farm inputs
• Illiteracy of the farmers
• Language barrier
• Conservatism of farmers
• Poor monitoring of extension service agents
• Inadequate credit facilities to the farmers

(d)Factors that affect the Supply of Cassava in West Africa

• Price of cassava
• The price of related goods
• Changes in the cost of production
• Technological advancement
• Changes in the number of producers
• Changes in climate and weather
• Government policy/import restriction
• Wars/Conflicts
• Natural disaster e.g. wild fire, flood etc.
• Subsidies
• Aims/Objectives of the farmer

Explanation

Let C be the cost and n the number of tourists. then C = x + ny. Where x and y are constants

740 = x + 20y...........(1)

960 = x + 30y.............(2)

Solving (1) and (2) simultaneously will yield x = 300 and y = 22.

Then, C = 300 + 22n.

If we substitute 15 for n this implies that C = 300 + (22 x 15)= $630.00

Correct Answer: C. incompatibility