Calculate the mass percentage composition of the elements in nitric acid (H = 1, N = 14, O = 16).

Mass percentage of oxygen =6348×100=76. 19%

The Percentage of Mass of Oxygen in Nitric Acid (HNO3)

Nitric acid (HNO3) is a strong and highly corrosive acid commonly used in various industrial processes, laboratory experiments, and as a component in fertilizers and explosives. It is composed of three elements: hydrogen (H), nitrogen (N), and oxygen (O).

To calculate the percentage of mass of oxygen in nitric acid, we need to consider the molecular formula of nitric acid and the atomic masses of its constituent elements.

The Molecular Formula of Nitric Acid (HNO3)
The molecular formula of nitric acid is HNO3, which indicates that it consists of one hydrogen atom (H), one nitrogen atom (N), and three oxygen atoms (O).

Atomic Masses of the Elements in Nitric Acid
To calculate the percentage of mass of oxygen, we need to know the atomic masses of hydrogen, nitrogen, and oxygen.

- The atomic mass of hydrogen (H) is approximately 1 gram/mole.
- The atomic mass of nitrogen (N) is approximately 14 grams/mole.
- The atomic mass of oxygen (O) is approximately 16 grams/mole.

Calculating the Molar Mass of Nitric Acid
To calculate the molar mass of nitric acid, we need to sum the atomic masses of its constituent elements.

Molar mass of HNO3 = (1 * atomic mass of H) + (1 * atomic mass of N) + (3 * atomic mass of O)
= (1 * 1) + (1 * 14) + (3 * 16)
= 1 + 14 + 48
= 63 grams/mole

Calculating the Percentage of Mass of Oxygen in Nitric Acid
To calculate the percentage of mass of oxygen in nitric acid, we need to determine the mass of oxygen in one mole of nitric acid and then divide it by the molar mass of nitric acid. Finally, we multiply the result by 100 to express it as a percentage.

- Mass of oxygen in one mole of nitric acid = (3 * atomic mass of O)
= (3 * 16)
= 48 grams/mole

- Percentage of mass of oxygen in nitric acid = (Mass of oxygen / Molar mass of nitric acid) * 100
= (48 / 63) * 100
= 76.19%

Therefore, the percentage of mass of oxygen in nitric acid (HNO3) is approximately 76.19%.

Summary
- Nitric acid (HNO3) is a compound composed of hydrogen (H), nitrogen (N), and oxygen (O).
- To calculate the percentage of mass of oxygen in nitric acid, we need to consider its molecular formula and the atomic masses of its constituent elements.
- The molecular formula of nitric acid is HNO3, indicating one hydrogen atom, one nitrogen atom, and three oxygen atoms.
- The atomic masses of hydrogen, nitrogen, and oxygen are approximately 1 gram/mole, 14 grams/mole, and 16 grams/mole, respectively.
- The molar mass of nitric acid is calculated by summing the atomic masses of its constituent elements.
- The percentage of mass of oxygen in nitric