The weighed out to make of an aqueous solution containing per mL is g. (Rounded off to nearest integer) [Atomic weight in g/mol: Na: 23; N: 14; O: 16]

Question

The  weighed out to make  of an aqueous solution containing   per mL is  g. (Rounded off to nearest integer) [Atomic weight in g/mol: Na: 23; N: 14; O: 16]

Canvas Classes · Accepted Answer

Strategy:
 First, calculate the total mass of Sodium ions needed for the entire solution. Then, relate this the mass of the parent compound, , using their molar mass ratio ( mole ratio).

Step 1: Calculate total Sodium required
Concentration . Volume .

Step 2: Determine mass of } \ce{NaNO3}
 of  is contained in  of .

Nearest integer is 13.

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