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W0lf93
1.882 x 10^(-3) moles aluminum chloride has a formula of AlCl3. So let's calculate the molar mass of AlCl3 atomic mass of Al = 26.982 atomic mass of Cl = 35.453 molar mass of AlCl3 = 26.982 + 3 * 35.453 = 26.982 + 106.359 = 133.341 We have 0.2510 grams of AlCl3, so divide that by the molar mass of AlCl3, giving 0.2510 / 133.341 = 0.001882 moles = 1.882 x 10^(-3) moles

0.00565 moles of Chloride ions are in 0.2510 g of aluminium chloride.

Further Explanation:

An Atom

  • An atom is the smallest particle of an element that can take part in a chemical reaction. For example, sodium atom, Na.  

A Molecule

  • A molecule is a substance that is made up of one or more atoms. The atoms in a molecule may be similar or different making a compound.  

A compound  

  • A compound is a substances that contains two or more different atoms that are bonded together. When the atoms are similar the substance is known as a molecule, therefore not all molecules are compounds.
  • AlCl₃  is an example of a compound that contains three aluminium ions and two chloride ions.

Therefore;

AlCl₃  ionizes to give out Al³⁺ ions and 3Cl⁻ ions

AlCl₃  → Al³⁺ + 3Cl⁻

Required to determine the moles of ions of Cl⁻ ions

Step 1: Moles of AlCl₃

Number of moles = Mass /Molar mass

Molar mass of AlCl₃  = 133.34 g/mol

Thus;

Moles = 0.2510 g/133.34 g/mol

           = 0.00188 moles

Step 3: Moles of Cl⁻ ions

1 mole of  AlCl₃  ionizes to give 3 moles Cl- ions

Therefore;

= 0.00188 moles  of AlCl₃ will produce;

  = 0.00188 moles x 3

 = 0.00565 moles Cl⁻ ions

Therefore; 0.00565 moles of Chloride ions are in 0.2510 g of aluminium chloride.

Keywords: Atoms, ions, Moles, molar mass

Learn more about;

  • Atom: https://brainly.com/question/5753305
  • Molecules; https://brainly.com/question/5753305
  • Compounds: https://brainly.com/question/5753305
  • Molecular mass: https://brainly.com/question/5753305

Level: High school

Subject: Chemistry

Topic: Moles