The answer is definitely D, which is DISSOLVED SALT. Salinity is the amount of dissolved salt contained in a substance. Hope i helped. Have a nice day.
Answer:
1.13 M.
Explanation:
- Molarity (M) is defined as the no. of moles of solute dissolved in a 1.0 L of the solution.
<em>M = (no. of moles of luminol)/(Volume of the solution (L).</em>
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∵ no. of moles of luminol = (mass/molar mass) of luminol = (15.0 g)/(177.16 g/mol) = 0.085 mol.
Volume of the solution = 75.0 mL = 0.075 L.
∴ M = (no. of moles of luminol)/(Volume of the solution (L) = (0.085 mol)/(0.075 L) = 1.13 M.
Hmmm.. i think B. I dont understand the the answer choices.
Square espero que eso te ayude!
