Question

Find the number of particles in 32g of SO2.​

Answer 1

Answer:

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Explanation:

Divide the given mass by the molecular weight of SO2 to get number of moles (n), then multiply moles by Avogadro's number to get number of molecules (N).

 

Atomic weights:

 

S = 32.07 g/mole

O = 16.00 g/mole

 

Molecular weight:

 

SO2 = 32.07 + 2(16.00) = 64.07 g/mole  

 

n = (32 g) / (64.07 g/mole) = 0.49945 moles

 

N = nA = (0.49945 moles) (6.02 x 1023 molecules/mole) = 3.007 x 1023 molecules

 

There are about 3.007 x 1023 molecules of SO2 in 32 g of SO2.