What is the molar mass of sulfuric acid (H2SO4), and diatomic oxygen?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

Molar mass is the mass (in grams) per mole (6.02 x 10 ^ 23 particles) of a substance. The molar mass of a substance is calculated by finding the sum off all the atomic masses of every atom that is a part of a substance. 

The formula unit for sulfuric acid...

Unlock
This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Start your 48-Hour Free Trial

Molar mass is the mass (in grams) per mole (6.02 x 10 ^ 23 particles) of a substance. The molar mass of a substance is calculated by finding the sum off all the atomic masses of every atom that is a part of a substance. 

The formula unit for sulfuric acid is H2SO4. Therefore, its molar mass would be calculated as below:

2 H = 2 x 1.01 = 2.02 g/ mol `H_(2)`

1 S = 32.1 g /mol S

4 O = 4 x 16.0 = 64.0 g / mol O

2.02 + 32.1 + 64.0 = 98.12 grams / mole H2SO4 (or close to, depending on how one rounds each of the atomic masses used within the calculation) 

The molecular formula for diatomic oxygen is O2. Therefore, its molar mass would be:

2 x 16.0 = 32.0 grams / mole O2

Approved by eNotes Editorial Team