What is the percent of hydrogen by mass in HNO3? (Molar
mass of HNO3 = 630 g/mol)

Question

contestada

Respuesta :

philip242 philip242 · Answer 1 · 2021-04-21T23:12:35+02:00

Answer:

63.01284 g/mol

Explanation:

This compound is also known as Nitric Acid.

Convert grams HNO3 to moles or moles HNO3 to grams

Molecular weight calculation:

1.00794 + 14.0067 + 15.9994*3

Percent composition by element

Element Symbol Atomic Mass # of Atoms Mass Percent

Hydrogen H 1.00794 1 1.600%

Nitrogen N 14.0067 1 22.228%

Oxygen O 15.9994 3 76.172%

Answer Link

samueladesida43 samueladesida43 · Answer 2 · 2022-04-21T12:18:21+02:00

The percentage of hydrogen by mass in nitric acid (HNO3) is 1.59%. Details about percent mass can be found below.

The percentage by mass of an element in a compound can be calculated using the following formula:

percent by mass of element = atomic mass of element/molar mass of compound × 100

Atomic mass of H = 1g/mol

percent by mass = 1/63 × 100

percent by mass = 1.59%

Therefore, the percentage of hydrogen by mass in nitric acid (HNO3) is 1.59%.

Learn more about percent by mass at: https://brainly.com/question/2817451