Chemical Composition of CuSO4·5H2O

The video tutorial explains how to calculate the number of atoms in copper(II) sulfate pentahydrate (CuSO4·5H2O). It begins by introducing the compound and its components, including copper, sulfur, and oxygen. The tutorial then breaks down the atom count for copper(II) sulfate and the pentahydrate component, which includes hydrogen and oxygen. Finally, it demonstrates how to sum up all the atoms to find the total number in the compound, resulting in 21 atoms.

What does the dot in the chemical formula CuSO4·5H2O signify?

• It shows the presence of water molecules.

• It separates the elements in the compound.

• It indicates a chemical reaction.

• It denotes a phase change.

How many copper atoms are present in copper(II) sulfate?

• Three

• Two

• One

• Four

In the formula CuSO4, how many oxygen atoms are there?

• Two

• Three

• Four

• One

What is the total number of hydrogen atoms in the pentahydrate part of CuSO4·5H2O?

• Five

• Ten

• Fifteen

• Twenty

How many oxygen atoms are contributed by the pentahydrate in CuSO4·5H2O?

• Ten

• Fifteen

• Five

• One

What is the total number of atoms in CuSO4·5H2O?

• 24

• 22

• 21

• 23

Which element in CuSO4·5H2O has the highest number of atoms?

• Hydrogen

• Sulfur

• Copper

• Oxygen