Question

Как рассчитать массовую долю азота в азотной кислоте

Answer 1

Ω(N)=Mr(N)/Mr(HNO3)=14/63=22.2%

Answer 2

Найдем молярную массу азотной кислоты.М(HNO3)=1+14+16*3=63г/моль Найдем массовую долю азота в азотной кислоте.w(N)=M(N)/M(HNO3)*100%=14:63*100%=~22%

Answer 3

Calculating the Mass Fraction of Nitrogen in Nitric Acid

To calculate the mass fraction of nitrogen in nitric acid (HNO3), you can use the formula:

Mass fraction of nitrogen (w(N)) = (Atomic mass of nitrogen / Molecular mass of nitric acid) * 100

Let's calculate the mass fraction of nitrogen in nitric acid using the given atomic and molecular masses.

The atomic mass of nitrogen (N) is 14 and the molecular mass of nitric acid (HNO3) is 1 (for hydrogen) + 14 (for nitrogen) + 48 (for three oxygens) = 63.

Using the formula: w(N) = (14 / 63) * 100

Calculating: w(N) = 0.222 * 100 = 22.2%

So, the mass fraction of nitrogen in nitric acid is approximately 22.2%.