Percent Composition of Carbon Monoxide

This video tutorial explains how to calculate the percent composition by mass for each element in carbon monoxide (CO). It begins by determining the molar mass of the compound, then calculates the percent composition of carbon and oxygen individually. The tutorial demonstrates the process of dividing the atomic mass of each element by the molar mass of the compound and multiplying by 100 to find the percentage. The video concludes by verifying that the percentages add up to 100%, ensuring the accuracy of the calculations.

What is the primary goal of the video tutorial?

• To explain the chemical bonding in carbon monoxide.

• To find the percent composition by mass for each element in CO.

• To demonstrate the physical properties of carbon monoxide.

• To discuss the industrial uses of carbon monoxide.

What is the molar mass of carbon monoxide?

• 16.00 grams per mole

• 44.01 grams per mole

• 12.01 grams per mole

• 28.01 grams per mole

How many carbon atoms are present in a molecule of carbon monoxide?

• Four

• One

• Three

• Two

What is the percent composition of carbon in carbon monoxide?

• 16.00%

• 28.01%

• 42.88%

• 57.12%

What is the atomic mass of oxygen used in the calculation?

• 16.00 grams per mole

• 12.01 grams per mole

• 28.01 grams per mole

• 44.01 grams per mole

What is the percent composition of oxygen in carbon monoxide?

• 16.00%

• 42.88%

• 57.12%

• 28.01%

What should the sum of the percent compositions of carbon and oxygen in CO be?

• 50%

• 90%

• 75%

• 100%

Why do the units of grams per mole cancel out in the percent composition calculation?

• Because they are not needed in the final result.

• Because they are the same in both the numerator and the denominator.

• Because they are irrelevant to the calculation.

• Because they are only used for oxygen.

What is the significance of the percent composition by mass?

• It indicates the physical state of a compound.

• It reveals the color of a compound.

• It shows the proportion of each element in a compound by mass.

• It helps in determining the chemical formula of a compound.