@iisanesteban8 asked 3 months ago.

9. how many moles of nacl are there in 25 cm3 of a 50 gdm-3 solution?

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@ydduzubonn answered 3 months ago.

A mole of a compound is defined as its molecular weight in grams. For sodium chloride, which has a molecular weight of 58.5 grams per mole, there would be 58.5 grams of sodium and 58.5 grams of chlorine in one mole of sodium chloride.
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@ticepowas answered 3 months ago.

It's a mole concept question. There are 25 moles of NaCl in 50 gm of solution.
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@solowigi answered 3 months ago.

The molar mass of sodium chloride is 58.443 g/mol, so we need to find out how many moles of sodium chloride are in 25 cm3 of a 50 g/dm solution. The density of sodium chloride is 2.
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@duxejenne answered 3 months ago.

Since the density of aqueous sodium chloride is 1.0 g/ml, the density of the solution is 50 g/ml. Thus, the mass of the solution is 50 g. The formula for molarity is M = m/V.

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