1. Convert 1.2 X 10^24 molecules of chlorine to grams.
Ans: 70.67 gms
There are 6.02E23 atoms in 1 mol.
mols Cl2 = 1.2E24/6.02E23 = ?
grams = mols x molar mass = ?
To convert 1.2 x 10^24 molecules of chlorine to grams, you need to use the concept of molar mass.
Here are the steps to get the answer:
Step 1: Determine the molar mass of chlorine:
The molar mass of chlorine (Cl2) is 35.45 grams/mole (g/mol). This means that one mole of chlorine has a mass of 35.45 grams.
Step 2: Calculate the number of moles:
Since we have the number of molecules, we need to find the number of moles. To do this, divide the number of molecules by Avogadro's number (6.022 x 10^23 molecules/mol).
1.2 x 10^24 molecules of chlorine / 6.022 x 10^23 molecules/mole = 1.99 moles (rounded to two decimal places)
Step 3: Convert moles to grams:
To convert moles to grams, multiply the number of moles by the molar mass of chlorine.
1.99 moles x 35.45 g/mol = 70.7645 grams (rounded to two decimal places)
So, 1.2 x 10^24 molecules of chlorine is equal to approximately 70.67 grams.