Chlorine Atoms and Copper Compounds

This video tutorial explains how to determine the number of atoms in copper(II) chloride (CuCl2). It begins by identifying the elements in the compound and explains the use of subscripts in chemical formulas. The video then demonstrates how to calculate the total number of atoms in CuCl2 by adding the atoms of copper and chlorine. Additionally, it covers how to find the number of chlorine atoms in one mole of CuCl2 using Avogadro's number. The tutorial concludes with a summary by Dr. B.

What is the assumed subscript for copper in CuCl2 when it is not explicitly written?

• Zero

• One

• Three

• Two

How many total atoms are present in a single molecule of CuCl2?

• Two

• Five

• Three

• Four

To find the number of chlorine atoms in one mole of CuCl2, which constant is used?

• Planck's constant

• Boltzmann's constant

• Avogadro's number

• Gravitational constant

How many chlorine atoms are there in one mole of CuCl2?

• One times Avogadro's number

• Two times Avogadro's number

• Four times Avogadro's number

• Three times Avogadro's number

What is the chemical formula for Copper(II) Chloride?

• CuCl

• CuCl2

• Cu2Cl

• Cu2Cl2