Molar Mass and Atomic Composition of KNO3

This video tutorial explains how to calculate the molar mass of potassium nitrate (KNO3). It begins by identifying the molar masses of the individual elements: potassium, nitrogen, and oxygen. The tutorial then demonstrates how to add these values, considering the subscripts in the chemical formula, to find the total molar mass of KNO3. The final result is presented as 101.11 grams per mole, with a brief conclusion by Dr. B.

What is the atomic mass of potassium (K) as mentioned in the video?

• 39.10 grams per mole

• 14.01 grams per mole

• 16.00 grams per mole

• 101.11 grams per mole

How many oxygen atoms are present in KNO3?

• 3

• 4

• 2

• 1

What is the total contribution of oxygen to the molar mass of KNO3?

• 48.00 grams per mole

• 32.00 grams per mole

• 16.00 grams per mole

• 64.00 grams per mole

What is the final calculated molar mass of KNO3?

• 14.01 grams per mole

• 101.11 grams per mole

• 39.10 grams per mole

• 16.00 grams per mole

Which element in KNO3 has an atomic mass of 14.01 grams per mole?

• Oxygen

• Potassium

• Nitrogen

• Hydrogen