Question

Thw number of molecules of water in 333 gram of al2(so4)3.18h2o

Answer 1

Hello Dear.

Here is the answer---

→→→→→→→→→

Molar Mass of the Al₂SO₄.18H₂O is 474 g/mole

∵ 474 grams of Aluminium Sulphate Crystals Contains 324 grams of Water.
∴ 1 grams ----------→ 324/474 grams of the Water.
∴333 grams --------→ 227.62 grams of Water.


No. of Molecules of Water = (Mass/Molecular mass) × Nₐ.
= (227.62/18) × 6.022 × 10²³.
= 76.15 × 10²³ Molecules.


Thus, the No. of Molecules of Water is 7.15 × 10²³.


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Hope it helps.

Answer 2

Answer:

Explanation:

Al2(SO4)3.18H2O molecules is=666g

Given molecules of water is = 333g

No.of molecule in water(H2O)=mole×avgdno.×18

=333/666×avgdno.×18

= 1/2×avgdno.×18

=avagdno.×9=Answer