Concentrated nitric acid used in the laboratory work is `68%` nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of solution is `1.504 g mL^(-1)`?

Explanation

To find the molarity of the concentrated nitric acid solution, we can follow these steps:

### Step 1: Understand the given information
We know that the solution is 68% nitric acid by mass, which means that in 100 grams of the solution, there are 68 grams of HNO3 (nitric acid) and 32 grams of water.

### Step 2: Calculate the volume of the solution
To find the volume of the solution, we can use the density formula:
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