Question

calculate the following :
number of S atoms in 3.2g of S8....

plz guys help me fast
............

Answer 1

Molar mass of S8 = 32×8 = 256 g
so,
in one mole of S8 = 256 g of S8 = 6.022×10²³ molecules of S8 = 48.176×10²³ atoms of S
so,
in two moles of S8 = 48.176×10²³×2 = 96.352×10²³ = 9.6352×10²⁴ atoms of S.
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Answer 2

no.of moles= given mass/molar mass
=3.2/32(8)
=3.2/256
=0.0125moles
HOPE THIS HELPS YOU