Correct Answer: D. Justice Akinola Aguda

Correct Answer: D. vengeance

Correct Answer: A. the ratio of their surface area to volume is small

Correct Answer: C. x ? -4

Explanation

3x - 8 ? 5x

3x - 5x ? 8

-2x ? 8

x ? -4

Correct Answer: B. rays of light passing through the object

Correct Answer: B. Sahik

Correct Answer: C. Carbon (ii) Oxide and Ethene

Correct Answer: B) 30.00 cm³

Correct Answer: C. 20 and 10

Explanation

The given nuclear reaction is:

²³₁₁Na + Proton →^p_qX + alpha particle

First, let's write out the symbols for a proton and an alpha particle:

• A proton is represented as¹₁p (or¹₁H). It has a mass number of 1 and an atomic number of 1.

• An alpha particle is represented as⁴₂He. It has a mass number of 4 and an atomic number of 2.

So, the complete reaction can be written as:

²³₁₁Na +¹₁p →^p_qX +⁴₂He

In any nuclear reaction, two fundamental conservation laws must be upheld:

1. Conservation of mass number (A): The sum of the mass numbers (the superscripts) on the reactant side must equal the sum of the mass numbers on the product side.

2. Conservation of atomic number (Z): The sum of the atomic numbers (the subscripts, representing charge/number of protons) on the reactant side must equal the sum of the atomic numbers on the product side.

Let's apply these laws:

1. Conservation of Mass Number (A):

Sum of mass numbers on the left side:

Mass number of Na + Mass number of proton = 23 + 1 = 24

Sum of mass numbers on the right side:

Mass number of X + Mass number of alpha particle = p + 4

Equating the sums:

24 = p + 4

p = 24 - 4

p = 20

2. Conservation of Atomic Number (Z):

Sum of atomic numbers on the left side:

Atomic number of Na + Atomic number of proton = 11 + 1 = 12

Sum of atomic numbers on the right side:

Atomic number of X + Atomic number of alpha particle = q + 2

Equating the sums:

12 = q + 2

q = 12 - 2

q = 10

Thus, the values are p = 20 and q = 10.

Now, let's check the given options:

A. 10 and 20

B. 12 and 24

C. 20 and 10

D. 24 and 12

The question asks for p and q respectively. Our calculated values are p = 20 and q = 10, which matches option C.

The final answer is C

Correct Answer: C. \(\frac{4y - x}{y}\)

Explanation

(\(\frac{x -y}{y}\)); \(\frac{3}{1} - \frac{x y}{y}\)

= \(\frac{3y - (x - y)}{y}\)

= \(\frac{3y - x + y}{y}\)

= \(\frac{4y - x}{y}\)