A gas made up of homonuclear diatomic molecules escapes through a pinhole 1.37 times as fast as cl2 gas. Write the chemical formula of the gas.

F₂

Explanation:

Let the R₁ represent the rate of diffusion of Cl₂

Let R₂ represent the rate of diffusion of the gas.

Let M₁ represent the molar mass of Cl₂

Let M₂ represent the molar mass of the gas.

From the question given above, the following data were obtained:

NOTE: Assume the rate of diffusion of Cl₂ is 1.

Rate of diffusion of Cl₂ (R₁) = 1

Rate of diffusion of the gas (R₂) = 1.37 times R1 = 1.37 × 1 = 1.37

Next, we shall determine the molar mass of the gas. This can be obtained as follow:

Rate of diffusion of Cl₂ (R₁) = 1

Molar mass of Cl₂ (M₁) = 35.5 × 2 = 71 g/mol

Rate of diffusion of the gas (R₂) = 1.37

Molar mass of the gas (M₂) =?

R₁/R₂ = √(M₂/M₁)

1/1.37 = √(M₂/71)

Square both side

(1/1.37)² = M₂ /71

1/1.8769 = M₂ /71

Cross multiply

1.8769 × M₂ = 71

Divide both side by 1.8769

M₂ = 71 / 1.8769

M₂ = 37.8 g/mol

Since the gas is a homonuclear (the same element) diatomic molecule, we shall divide the molar mass of the gas molecule by 2 to obtain the molar mass of the element that makes up the molecule. This is illustrated below:

Molar mass of the element = 37.8 / 2

Molar mass of the element = 18.9 g/mol

Comparing the molar mass of the element with those in the periodic table, the element that makes up the gas is fluorine. Thus the molecular formula of the gas F₂.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-