According to the following reaction, how many moles of phosphorus trichloride will be formed upon the complete reaction of 25.4 grams of phosphorus (P_4) with excess chlorine gas? phosphorus (P_4) (s) - chlorine (g) --> phosphorus trichloride (l)
moles phosphorus trichloride

0.82 mole of PCl₃

Explanation:

We'll begin by calculating the number of mole in 25.4 g of P₄. This can be obtained as follow:

Mass of P₄ = 25.4 g

Molar mass of P₄ = 4 × 31 = 124 g/mol

Mole of P₄ =?

Mole = mass / Molar mass

Mole of P₄ = 25.4 / 124

Mole of P₄ = 0.205 mole

Next, the balanced equation for the reaction. This is illustrated below:

P₄ + 6Cl₂ —> 4PCl₃

From the balanced equation above,

1 mole of P₄ reacted to produce 4 moles of PCl₃

Finally, we shall determine the number of mole of phosphorus trichloride, PCl₃, produced by the reaction of 25.4 g (i.e 0.205 mole) of P₄. This can be obtained as follow:

From the balanced equation above,

1 mole of P₄ reacted to produce 4 moles of PCl₃.

Therefore, 0.205 mole of P₄ will react to produce = 0.205 × 4 = 0.82 mole of PCl₃

Thus, 0.82 mole of PCl₃ was obtained from the reaction.

the discovery of atomic structure.

Explanation:

Rutherford was a famous scientist who gave his theory of atomic structure.

Ernest Rutherford was a great physicist who is well known for his pioneering studies and discoveries about atoms and radioactivity. Rutherford was considered to be the greatest experimentalist after Michael Faraday.

Rutherford's atomic model was one of the greatest discoveries which provided many answers and solutions to the structure of atom and molecules that our earth is surrounded of.

Rutheford discovered that an atom has a tiny mass of positively charged particles in the centre of the atom called nucleus and negatively charged electrons surrounds the nucleus.

Bohr joined Rutherford in his studies and discovered many new facts about the structure of the atom based on the Rutherford's model. Today atomic model is the product of Rutherford atomic structure.