number of moles in 128 gm of so2 will be
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number of moles in 128 gm of so2 will be
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Atomic mass of S=32.06 u
Oxygen=16 u
molecular mass of SO2=32.06+2x16=64.06g
molar mass of SO2=64.06g/mol
no. Of moles= Given mass/molar mass
=128/64.06=1.99moles
Verified answer
S = 32, O = 16Molar mass of SO2 = 32 + 16x2 = 64 g
No. of moles = Given mass/Molar mass
= 128/64
= 2 moles