Question

How many total atoms are in 0.550 g of P2O5?

Answer 1

Concepts and reason

Number of moles of the substance is the simple ratio of the mass to the molar mass of that substance. One mole of substance contains the Avogadro number of molecules in it. Number of atoms in a molecule can be calculated by using the number of moles and molecules.

Fundamentals

Molar mass = sum of the mass of the individual atoms present in the molecule

Given molecular formula is

Therefore molar mass of =142g/mol

Now

Number of moles of present in 0.550g of=0.00387 mol

Number of moles of present in 0.550g of=0.00387 mol

Therefore Number of moles of present in 0.550g of=

Now

Number of atoms present in one molecule of =7

Total number of atoms present in molecules of is

Therefore, total number of atoms present in the 0.550 g of is atoms.

Ans:

Total atoms in 0.550g of =