Question

calculate molarity of water if its density is 1000 kg m3

Answer 1

Hello Dear.

Here is the answer---

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Given 》
Density of the Water = 1000 kg/m3

We know,
1 liter of water = 1 kg.
( Since, Density is 1000 kg/ m^3

Thus, 1000 ml of water = 1 kg.
(Since, 1 liter = 1000 ml)

Now, Mass of Water = 1 kg.
= 1000 g.

Molecular mass of the water molecules = 18 grams.

Using the formula,

No.of moles = Mass/ Molecular mass.
= 1000/18 moles.
= 55.56 moles.

For the Molarity,

Using the Formula,

Molarity =
(No. of Moles/Volume in ml) × 1000
= (55.56/1000) × 1000
= 55.56 M.

Thus, the molarity of the water is 55.56 M.

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Hope it helps.

Have a Good Day.

Answer 2

Answer:

55.55M

Explanation:density =1000kg/m^3=1kg/dm^3

Idm^3 or 1 l of water =1 kg =1000g

No of moles =1000/18=55.55

Molarity =55.55M