What is the mass, in grams, of 7.18 x 10^24 molecules of chlorine?
To determine the mass of 7.18 x 10^24 molecules of chlorine, you will need to follow these steps:
1. Determine the molar mass of chlorine (Cl):
The molar mass of an element can be found on the periodic table. For chlorine (Cl), the molar mass is approximately 35.45 grams per mole (g/mol).
2. Convert the number of molecules of chlorine to moles:
The given quantity is in terms of molecules, but we need to convert it to moles to make use of the molar mass. We can use Avogadro's number, which states that 1 mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, etc.). Divide the given number of molecules (7.18 x 10^24) by Avogadro's number to convert it to moles.
Calculation:
Number of moles = (7.18 x 10^24 molecules) / (6.022 x 10^23 molecules/mol)
3. Calculate the mass in grams:
Once you have the number of moles, you can multiply it by the molar mass to get the mass in grams.
Calculation:
Mass (in grams) = Number of moles x Molar mass
Therefore, to find the mass of 7.18 x 10^24 molecules of chlorine, perform the following calculations:
1. Molar mass of chlorine (Cl) = 35.45 g/mol
2. Number of moles = (7.18 x 10^24 molecules) / (6.022 x 10^23 molecules/mol)
3. Mass (in grams) = Number of moles x Molar mass
Using these steps, you can calculate the mass in grams of 7.18 x 10^24 molecules of chlorine.