help in physics

Question

Determine the value of A, Z and X for the equation shown below:

 

 

The value for A is:

 

 

The value for Z is:

 

 

The chemical symbol for X is:

 

 

 

 

2- 

Determine the value of A, Z and X for the equation shown below:

 

 

The value for A is:

 

 

The value for Z is:

 

 

The chemical symbol for X is:

 

 

 

Answer 1

1a)

Given chemical equation is

In above equation

Z = Atomic Number.

A = Mass number = Number of Nucleons = The total number of protons and neutrons in the nucleus of an atom

X = Symbolic representation of the Chemical element.

In any balanced equation

Total of mass numbers or Atomic Numbers of each molecule on Left side and right side are equal.

Equate Atomic Numbers both sides.

11 + 1 = Z + 1

Z = 11.

Solution : Z = 11.

Answer 2

1b)

Equate Mass numbers both sides of given equation.

23 + 2 = A + 1

A + 1 = 25.

A = 25 - 1

A = 24

Solution : A = 24.

Answer 3

1c)

Chemical symbol X can be determined from the Atomic Number of the element.

From the answer 1(a)

Atomic number Z = 11.

From periodic table Sodium (Na) has an atomic number 11.

Solution : Chemical symbol X indicates " Na ".

Answer 4

2a)

Given chemical equation is

In the above equation

Z = Atomic Number.

A = Mass number.

X = Symbolic representation of the Chemical element.

In any balanced equation

Total of mass numbers or Atomic Numbers of each molecule on Left side and right side are equal.

Equate Atomic Numbers both sides.

7 + 0 = Z + 6

Z = 7 - 6

Z = 1.

Solution : Z = 1.

Answer 5

2b)

Equate Mass numbers both sides of given equation.

14 + 1 = A + 14

A + 14 = 15.

A = 15 - 14

A = 1

Solution : A = 1.

Answer 6

2c)

Chemical symbol X can be determined from the Atomic Number of the element.

From the answer 2(a)

Atomic number Z = 1.

From the periodic table Hydrogen (H) which has an atomic number 1.

Solution : Chemical symbol X indicates " H ".