3. Each of 2 front tires in the car is filled with a different gas. One tire contains 116 g of helium, another tire has 160 g of unknown gas. How many times heavier is a molecule of the unknown gas than an atom of helium?
To find out how many times heavier a molecule of the unknown gas is compared to an atom of helium, we need to compare their molar masses.
1. Determine the molar mass of helium (He):
- The atomic mass of helium is approximately 4 g/mol because helium has an atomic number of 2 on the periodic table. Since atomic mass is the mass of one mole of atoms, it represents a mole of helium atoms.
2. Determine the molar mass of the unknown gas:
- To determine the molar mass of the unknown gas, we need to know its identity. Without knowing its chemical formula or properties, we cannot determine the exact molar mass.
Therefore, without additional information about the unknown gas, it is not possible to determine how many times heavier a molecule of the unknown gas is compared to an atom of helium.