Verified Answer :

Tiendi

mass = moles x molar mass
molar mass of H2O is 18
therefore mass = 18 x 5
=90 g

Divyankasc

Mass = Molar mass × No. of moles

Molar mass of Water(H2O) = 1+1+16 = 18 gm

No. of moles = 5

Therefore, total mass = 18 × 5 = 90 gm

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