A sample of N a N O 3 weighing 0.38 g is placed in a 50.0 m L volumetric flask. The flask is then filled with water to the mark on the neck. What is the molarity of the solution?

Question

A sample of N a N O 3 weighing 0.38 g is placed in a 50.0 m L volumetric flask. The flask is then filled with water to the mark on the neck. What is the molarity of the solution?, 8.94 × 10 - 6 M, 8.94 × 10 - 2 M, 1.94 × 10 - 2 M, 8.94 × 10 - 4 M

MARKS App · Accepted Answer

Molarity × Volume in m L = M i l l i m o l e = w M × 1000 ∴ M o l a r i t y × 50 = 0.38 85 × 1000 [ M o l . w t . o f N a N O 3 = 85 ] ∴ M o l a r i t y = 8.94 × 10 - 2

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