if from 3moles MgSO4.7H2O all the 'o' atoms are taken out and converted into ozone, find the number of O3 molecules formed.
I'll be glad to help if you will explain what you don't understand. "None of it" is not an acceptable answer.
To find the number of ozone (O3) molecules formed from the 'o' atoms in 3 moles of MgSO4.7H2O, we need to follow a step-by-step approach.
Step 1: Determine the number of moles of 'o' atoms in MgSO4.7H2O.
The formula for magnesium sulfate heptahydrate (MgSO4.7H2O) indicates that there are 4 'o' atoms present in each molecule. Therefore, 3 moles of MgSO4.7H2O will contain 3 * 4 = 12 moles of 'o' atoms.
Step 2: Convert the number of moles of 'o' atoms to the number of molecules of ozone.
To convert moles to molecules, we need to use Avogadro's number, which states that 1 mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, or ions). We can use this information to convert moles of 'o' atoms to molecules of ozone.
12 moles 'o' atoms * (6.022 x 10^23 molecules O3 / 1 mole 'o' atoms)
= 72.264 x 10^23 molecules O3
Therefore, from 3 moles of MgSO4.7H2O, the number of ozone molecules formed is approximately 72.264 x 10^23.