Lithium Mass and Properties

This video tutorial explains how to calculate the mass of one atom of lithium. It begins by identifying the atomic mass of lithium from the periodic table, which is 6.94 grams per mole. The tutorial then demonstrates how to use Avogadro's number as a conversion factor to find the mass of a single lithium atom, resulting in 1.53 x 10^-23 grams. Additionally, it covers how to adjust the calculation for lithium isotopes, such as lithium-6, by using the isotope's mass number instead of the average atomic mass.

What is the primary goal of the video tutorial?

• To calculate the mass of a lithium atom

• To understand the periodic table

• To learn about chemical reactions

• To study the properties of metals

How is the molar mass of lithium expressed?

• In kilograms per mole

• In grams per mole

• In liters per mole

• In atoms per mole

What is Avogadro's number used for in this context?

• To find the volume of a gas

• To calculate the number of atoms in a mole

• To measure the temperature of a reaction

• To determine the density of a substance

What is the mass of one lithium atom in grams?

• 6.94 grams

• 1.53 x 10^-26 grams

• 1.53 x 10^-23 grams

• 6.02 x 10^23 grams

Why is the mass of a lithium atom considered very small?

• Because it is less than a mole

• Because lithium is a light metal

• Because atoms are very tiny

• Because it is measured in kilograms

How do you convert the mass of a lithium atom from grams to kilograms?

• Add 1000

• Divide by 1000

• Multiply by 1000

• Subtract 1000

What is the mass of a lithium atom in kilograms?

• 1.53 x 10^-23 kg

• 1.53 x 10^-26 kg

• 6.94 kg

• 6.02 x 10^23 kg

What is the mass number used for when calculating the mass of a lithium-6 isotope?

• To calculate the volume of the atom

• To replace the average atomic mass

• To find the number of protons

• To determine the charge of the atom

What would you use instead of the average atomic mass for a lithium-6 isotope?

• The atomic number

• The mass number 6

• The molar volume

• The density of lithium