### F.3 Chemical Principle 7th edition

Posted:

**Thu Oct 03, 2019 4:45 pm**(a) Write the formula for nitric acid. (b) Without doing a calculation, estimate which element in nitric acid occurs with the greater mass percentage.

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=11&t=46135

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Posted: **Thu Oct 03, 2019 4:45 pm**

(a) Write the formula for nitric acid. (b) Without doing a calculation, estimate which element in nitric acid occurs with the greater mass percentage.

Posted: **Thu Oct 03, 2019 4:50 pm**

a) HNO3

b) Oxygen. Hydrogen is approx 1 amu, nitrogen is approx 14 amu, and oxygen is approx 16 amu. Since there are 3 oxygen, it will have a higher mass percent.

b) Oxygen. Hydrogen is approx 1 amu, nitrogen is approx 14 amu, and oxygen is approx 16 amu. Since there are 3 oxygen, it will have a higher mass percent.

Posted: **Thu Oct 03, 2019 4:53 pm**

For this question, you'll probably have to have known the formula for nitric acid beforehand.

Nitric acid is one of the seven strong acids.

a. Nitric acid =

b. While knowing that...

H = 1.008 grams/mol

N = 14.01 grams/mol

O = 16.00 grams/mol

you can estimate that O has the greatest mass percentage since it has the highest atomic mass and because there are three atoms of O (16x3=total of 48g) in

Nitric acid is one of the seven strong acids.

a. Nitric acid =

b. While knowing that...

H = 1.008 grams/mol

N = 14.01 grams/mol

O = 16.00 grams/mol

you can estimate that O has the greatest mass percentage since it has the highest atomic mass and because there are three atoms of O (16x3=total of 48g) in