Understanding Barium Nitrate Composition

The video tutorial explains how to determine the total number of atoms in barium nitrate (Ba(NO3)2). It begins by identifying the elements present in the compound: barium, nitrogen, and oxygen. The tutorial then demonstrates how to calculate the number of each type of atom using subscripts and parentheses. It concludes by explaining how to use Avogadro's number to find the number of nitrogen atoms in one mole of barium nitrate.

What elements are present in the compound barium nitrate?

• Barium, Sulfur, Oxygen

• Barium, Nitrogen, Hydrogen

• Barium, Nitrogen, Oxygen

• Barium, Carbon, Oxygen

If there is no subscript written after an element in a chemical formula, what does it imply?

• The element is not present

• The element is a gas

• There is one atom of that element

• There are two atoms of that element

How many nitrogen atoms are present in one molecule of barium nitrate?

• Four

• Three

• Two

• One

What is the total number of atoms in a single molecule of barium nitrate?

• Nine

• Ten

• Eight

• Seven

How many oxygen atoms are present in one molecule of barium nitrate?

• Six

• Two

• Four

• Eight

To find the number of nitrogen atoms in one mole of barium nitrate, which constant is used?

• Avogadro's number

• Boltzmann's constant

• Planck's constant

• Gravitational constant

What is the result of multiplying the number of nitrogen atoms in barium nitrate by Avogadro's number?

• The number of oxygen atoms in one mole

• The number of barium atoms in one mole

• The number of nitrogen atoms in one mole

• The number of nitrogen atoms in one molecule