Atoms and Molecules in NaNO3

The video tutorial explains how to determine the number of atoms in sodium nitrate (NaNO3). It begins by identifying the elements in NaNO3: sodium (Na), nitrogen (N), and oxygen (O). The tutorial then demonstrates how to count the total number of atoms in NaNO3, which is five. It further explains how to calculate the number of oxygen atoms in one mole of NaNO3 using Avogadro's number, resulting in 18.06 x 10^23 atoms. Similarly, it shows how to find the number of sodium atoms in one mole, which is 6.02 x 10^23 atoms. The video concludes with a brief sign-off by Dr. B.

What are the elements present in the chemical formula NaNO3?

• Sodium, Nitrogen, Oxygen

• Sodium, Nitrogen, Hydrogen

• Sodium, Oxygen, Carbon

• Nitrogen, Oxygen, Carbon

How many atoms of sodium are present in a single molecule of NaNO3?

• One

• Three

• Four

• Two

What is the significance of the subscript '3' in NaNO3?

• It indicates the number of molecules

• It indicates the number of sodium atoms

• It indicates the number of nitrogen atoms

• It indicates the number of oxygen atoms

What is the total number of atoms in a molecule of NaNO3?

• Seven

• Five

• Six

• Four

How many atoms of oxygen are there in one mole of NaNO3?

• 9.03 x 10^23

• 6.02 x 10^23

• 3.01 x 10^23

• 18.06 x 10^23

What is Avogadro's number used for in chemistry?

• To measure the volume of a gas

• To find the mass of an element

• To determine the number of atoms in a mole

• To calculate the number of molecules in a compound

How many sodium atoms are present in one mole of NaNO3?

• 18.06 x 10^23

• 6.02 x 10^23

• 24.08 x 10^23

• 12.04 x 10^23