Question

ccalculate the number of atoms in 11gm of CO2 ​

Answer 1

Answer:

The number of atoms in 11 grams of CO₂= 4.50×10²³ atoms

Explanation:

The given compound is CO₂

The molar mass of CO₂= 44 $g/mol$

Mass of CO₂ given = 11$gram$

Number of moles of carbon dioxide in 11 grams of sample = $\frac{11}{44}=\frac{1}{4}=0.25 moles$

The number of molecules in one mole = 6.022×10²³

∴The number of CO₂ molecules in 0.25 moles of sample

                                                                    = 0.25×6.022×10²³

                                                                    = 1.50×10²³ molecules

One molecule of carbon dioxide has one carbon atom and two oxygen atoms in it. Hene, Number of atoms in one molecule =3

The number of atoms in 11 grams of CO₂= 3​× 1.50×10²³ = 4.50×10²³ atoms