The molarity of 90% HNO3 with a density of 1.50 g/mL would be 21.34 M.
Molarity (M) is the amount of a substance in a sure quantity of answers. Molarity is described because the moles of a solute according to liters of an answer. Molarity is also called the molar attention of an answer.
Molar concentration is a measure of the attention of a chemical species, specifically of a solute in an answer, in terms of the amount of substance in step with the unit extent of the answer. In chemistry, the most generally used unit for molarity is the number of moles in keeping with liter, having the unit symbol mol/L or mol/dm³ in SI unit.
Recall that: Density of a solution = mass/volume
For 100 g HNO3 solution,
volume = 100/1.50
= 66.67 mL
A mole of 90% HNO3 = 90/63
= 1.43 moles
Molarity = mole/volume
= 1.43/0.067
= 21.34 M
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