What is the molarity of the sodium ion if the density of the seawater is 1.025 g/mL.
______M
2006-11-02 13:03:00 · 2 answers · asked by Poopz 2 in Science & Mathematics ➔ Chemistry
ANSWER: 0.482 M
EXPLANATION:
M = mol solute / L soln
Therefore, you need to find the mol of solute and L of soln to find M.
To find mol solute:
10800mg Na(1g Na/1000mg Na)(1mol Na/22.99g Na) = 0.4698mol Na
To find L of soln:
1kg soln(1000g soln/1kg soln)(1ml soln/1.025g soln)(1L soln/1000ml soln) = 0.9756L
Using the two values found plug in to M = mol solute / L soln
0.4698mol Na / 0.9756L soln = 0.482 M
2006-11-02 22:59:29 · answer #1 · answered by †ђ!ηK †αηK² 6 · 0⤊ 0⤋
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2016-12-28 11:27:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋