yracepe
yracepe
12-10-2020
Chemistry
contestada
number of SO42- ions in 20.4 g Cr2(SO4)3
Respuesta :
IamSugarBee
IamSugarBee
12-10-2020
Gram molecular mass of
Cr2(SO4)3 = 392.6 g
No. of moles in 39.2 g of
Cr2(SO4)3 = 39.2/392.6 = 0.1 mol
1 mol of
Cr2(SO4)3
contains =
3 x 6.023 x 1023 sulphate ions
So, 0.1 mol of
Cr2(SO4)3
will contain =
0.1 x 3 x 6.023 x 1023 = 1.8069 x 1023 sulphate ions
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