Molar Mass of HgO Calculations

The video tutorial explains how to calculate the molar mass of mercury(II) oxide (HgO). It begins by identifying the molar mass of mercury from the periodic table, which is 200.59 grams per mole. Then, it adds the molar mass of oxygen, 16.00 grams per mole, to get a total molar mass of 216.59 grams per mole for HgO. The tutorial also discusses rounding the result to two decimal points and provides an alternative rounding to three decimal points. The video concludes with a brief thank you from Dr. B.

What is the first step in finding the molar mass of HgO?

• Subtract the atomic mass of oxygen from mercury.

• Look up the atomic mass of oxygen.

• Look up the atomic mass of mercury.

• Add the atomic masses of hydrogen and oxygen.

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

• 16.00 grams per mole

• 100.30 grams per mole

• 200.59 grams per mole

• 216.59 grams per mole

How do you calculate the molar mass of HgO?

• Multiply the atomic masses of mercury and oxygen.

• Add the atomic masses of mercury and oxygen.

• Subtract the atomic mass of oxygen from mercury.

• Divide the atomic mass of mercury by oxygen.

What is the molar mass of HgO after rounding to two decimal places?

• 16.00 grams per mole

• 200.59 grams per mole

• 216.589 grams per mole

• 216.59 grams per mole

What is the significance of rounding in the calculation of molar mass?

• It is not necessary for molar mass calculations.

• It simplifies the representation of the molar mass.

• It ensures the calculation is more precise.

• It changes the chemical properties of the compound.