Explanation:
First, let's discover the quantity in moles of 25.2 g of HNO3. For this, we use the following formula: n = m/MM
MM of HNO3 = 63 g/mol
m = 25.2
n = 25.2/63
n = 0.4 moles
Now using the following formula: M = n/V
We can find the molarity of the solution:
n = 0.4 moles
V = 1L
M = 0.4/1
M = 0.4 mol/L
Answer: 0.4 mol/L
