Respuesta :

Neetoo

Answer:

Coefficient = 3

Subscript for Mg = 1

Subscript for Cl = 2

Explanation:

Coefficient:

A coefficient is number before the chemical formula which tells the number of molecules take part in chemical reaction.

For example:

2H₂ + O₂    →  2H₂O

In this reaction 2 moles of hydrogen react with one mole of oxygen and produce 2 mole of water. The number 2, 1 and 2 are the coefficient.

In given formula 3MgCl₂ the number before the formula which is three is coefficient.

While the number written as subscript tell about the number of atoms of elements. e.g.in MgCl₂ two atoms of chlorine and one atom of magnesium are present in given formula. If only one atom of particular element is present then it is not written as subscript.

dsdrajlin

In "3 MgCl₂", the coefficient is 3, the subscript for Mg is 1 and the subscript for Cl is 2.

Let's consider the expression 3 MgCl₂.

  • 3 is the coefficient (also known as stoichiometric coefficient) and indicates that there are 3 moles of MgCl₂.
  • 1 is the subscript for Mg and indicates that there is 1 atom of Mg per molecule of MgCl₂ (the absence of subscript indicates it is 1).
  • 2 is the subscript for Cl and indicates that there are 2 atoms of Cl per molecule of MgCl₂.

In "3 MgCl₂", the coefficient is 3, the subscript for Mg is 1 and the subscript for Cl is 2.

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