11. What is the molarity of a solution containing 15.4 mg of NaCl in 0.5 ml...

Question

Question

science biology

Answer 1

Answer #1

Molarity is the number of moles of solute per litre of solution.

No. Of moles of NaCl weight of NaCl/ molecular weight of NaCl

Molecular weight of NaCl 58.4g

Weight of NaCl 15.4 mg 0.0154 g

No.of moles of NaCl = 0.0154/58.4 = 0.0002635

Molarity = 0.0002635/ 0.0005 = 0.527 M

Answer 2

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