Understanding Magnesium Carbonate Composition

The video tutorial explains how to determine the number of atoms in magnesium carbonate (MgCO3). It begins by identifying the elements present in MgCO3 and counting the atoms of magnesium, carbon, and oxygen. The tutorial then demonstrates how to calculate the number of moles of each element using Avogadro's number. Finally, it discusses the presence of carbonate ions in magnesium carbonate.

What elements make up magnesium carbonate?

• Magnesium, Sulfur, and Oxygen

• Magnesium, Carbon, and Hydrogen

• Magnesium, Nitrogen, and Oxygen

• Magnesium, Carbon, and Oxygen

How many total atoms are present in a molecule of magnesium carbonate?

• 4

• 5

• 6

• 7

What is the number of magnesium atoms in one mole of magnesium carbonate?

• 1.20 x 10^24

• 3.01 x 10^23

• 6.02 x 10^23

• 1.00 x 10^23

How do you calculate the number of carbon atoms in one mole of magnesium carbonate?

• Add Avogadro's number

• Multiply by Avogadro's number

• Divide by Avogadro's number

• Multiply by 2

How many oxygen atoms are there in one mole of magnesium carbonate?

• 4

• 2

• 1

• 3

What is the charge of the carbonate ion in magnesium carbonate?

• 1-

• 1+

• 2+

• 2-

How many carbonate ions are present in one molecule of magnesium carbonate?

• One

• Two

• Three

• Four

What is the chemical formula for the carbonate ion?

• CO3 2-

• CO3 1-

• CO2

• CO4 2-