Question

calculate the number of molecules present in 2.2 grams of carbondioxide?explain with process....​

Answer 1

Explanation:

Molar mass CO2 = 44 g/mol

Mol CO2 in 100 g CO2 = 100 g / 44 g/mol = 2.272 mol CO2

1 mol CO2 contains 6.022*/10^23 moleculkes

2.272 mol CO2 contains 2.272*6.022*10^23 = 1.369*10^24 molecules

1 molecule CO2 contains 3 atoms

Number of atoms = 3*1.369*10^24 = 4.10*10^24 atoms in total

For significant digit purposes I have taken 100 g to be an exact number - 3 significant digits . If you are unhappy with this - 4*10^24 atoms

xXitzQueenofDpXx

Answer 2

Refer to the attachment :)

Need a mark :)

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