Question

Find the number of moles of water present in 488gm of baCl2. 2(H2O) ???

Answer 1

BaCl

2

.2H

2

O, have molar mass of 244g/mol

moles of BaCl

2

.2H

2

O in 488g =

molecular weight

given weight

=

244

488

=2

from the molecular formula we know that, 1 mole of BaCl

2

.2H

2

O contains 2 moles of water,

so, 2 moles of BaCl

2

.2H

2

O have water = 2×2=4moles

from the molecular formula we know that, 1 mole of BaCl2. 2H2O contains 2 moles of water, so, 2 moles of BaCl2. 2H2O have water = 2×2=4moles